./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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_11.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 a93221bc263791497331acd2a7a0150037c621aa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:11:20,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:11:20,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:11:20,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:11:20,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:11:20,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:11:20,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:11:20,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:11:20,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:11:20,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:11:20,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:11:20,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:11:20,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:11:20,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:11:20,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:11:20,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:11:20,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:11:20,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:11:20,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:11:20,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:11:20,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:11:20,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:11:20,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:11:20,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:11:20,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:11:20,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:11:20,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:11:20,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:11:20,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:11:20,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:11:20,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:11:20,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:11:20,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:11:20,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:11:20,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:11:20,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:11:20,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:11:20,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:11:20,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:11:20,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:11:20,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:11:20,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:11:20,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:11:20,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:11:20,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:11:20,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:11:20,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:11:20,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:11:20,244 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:11:20,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:11:20,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:11:20,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:11:20,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:11:20,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:11:20,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:11:20,245 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:11:20,245 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:11:20,246 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:11:20,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:11:20,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:11:20,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:11:20,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:11:20,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:11:20,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:11:20,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:11:20,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:11:20,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:11:20,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:11:20,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:11:20,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:11:20,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:11:20,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93221bc263791497331acd2a7a0150037c621aa [2021-08-30 19:11:20,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:11:20,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:11:20,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:11:20,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:11:20,611 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:11:20,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2021-08-30 19:11:20,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5a77b99/39a4d302f0d246a4aa5b75a9d4497346/FLAGa41d9339f [2021-08-30 19:11:21,185 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:11:21,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2021-08-30 19:11:21,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5a77b99/39a4d302f0d246a4aa5b75a9d4497346/FLAGa41d9339f [2021-08-30 19:11:21,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5a77b99/39a4d302f0d246a4aa5b75a9d4497346 [2021-08-30 19:11:21,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:11:21,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:11:21,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:11:21,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:11:21,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:11:21,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:21,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58159575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21, skipping insertion in model container [2021-08-30 19:11:21,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:21,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:11:21,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:11:21,877 WARN L228 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_11.c[4246,4259] [2021-08-30 19:11:21,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:11:21,895 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:11:21,930 WARN L228 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_11.c[4246,4259] [2021-08-30 19:11:21,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:11:21,968 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:11:21,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21 WrapperNode [2021-08-30 19:11:21,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:11:21,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:11:21,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:11:21,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:11:21,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:21,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:21,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:21,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:22,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:22,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:22,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:22,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:11:22,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:11:22,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:11:22,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:11:22,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (1/1) ... [2021-08-30 19:11:22,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:11:22,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:11:22,059 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) [2021-08-30 19:11:22,084 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 [2021-08-30 19:11:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:11:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:11:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 19:11:22,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:11:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 19:11:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 19:11:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 19:11:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:11:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 19:11:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:11:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:11:22,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:11:22,360 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:11:22,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:22 BoogieIcfgContainer [2021-08-30 19:11:22,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:11:22,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:11:22,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:11:22,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:11:22,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:11:21" (1/3) ... [2021-08-30 19:11:22,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2966191f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:22, skipping insertion in model container [2021-08-30 19:11:22,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:21" (2/3) ... [2021-08-30 19:11:22,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2966191f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:22, skipping insertion in model container [2021-08-30 19:11:22,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:22" (3/3) ... [2021-08-30 19:11:22,369 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2021-08-30 19:11:22,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:11:22,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 19:11:22,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:11:22,430 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, mConcurrency=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 [2021-08-30 19:11:22,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 19:11:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 44 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:11:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 19:11:22,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:22,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:11:22,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1865055063, now seen corresponding path program 1 times [2021-08-30 19:11:22,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:22,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539096994] [2021-08-30 19:11:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:22,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:22,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:22,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539096994] [2021-08-30 19:11:22,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539096994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:22,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:22,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:11:22,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809582633] [2021-08-30 19:11:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 19:11:22,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 19:11:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:11:22,813 INFO L87 Difference]: Start difference. First operand has 49 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 44 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:22,983 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2021-08-30 19:11:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 19:11:22,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-30 19:11:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:22,996 INFO L225 Difference]: With dead ends: 48 [2021-08-30 19:11:22,996 INFO L226 Difference]: Without dead ends: 43 [2021-08-30 19:11:22,998 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 19:11:23,001 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.17ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:23,002 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 5 Invalid, 81 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 146.17ms Time] [2021-08-30 19:11:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-30 19:11:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-08-30 19:11:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 75 transitions. [2021-08-30 19:11:23,030 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 75 transitions. Word has length 9 [2021-08-30 19:11:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:23,031 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 75 transitions. [2021-08-30 19:11:23,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 75 transitions. [2021-08-30 19:11:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:11:23,032 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:23,032 INFO L513 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] [2021-08-30 19:11:23,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:11:23,033 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash 699996050, now seen corresponding path program 1 times [2021-08-30 19:11:23,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:23,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742061289] [2021-08-30 19:11:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:23,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:23,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:23,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742061289] [2021-08-30 19:11:23,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742061289] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:23,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:23,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:23,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407195482] [2021-08-30 19:11:23,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:23,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:23,139 INFO L87 Difference]: Start difference. First operand 43 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:23,364 INFO L93 Difference]: Finished difference Result 79 states and 141 transitions. [2021-08-30 19:11:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 19:11:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:23,366 INFO L225 Difference]: With dead ends: 79 [2021-08-30 19:11:23,366 INFO L226 Difference]: Without dead ends: 79 [2021-08-30 19:11:23,366 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:23,368 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 185 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.92ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:23,368 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 7 Invalid, 151 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 184.92ms Time] [2021-08-30 19:11:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-30 19:11:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2021-08-30 19:11:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.8627450980392157) internal successors, (95), 51 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2021-08-30 19:11:23,377 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 22 [2021-08-30 19:11:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:23,378 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2021-08-30 19:11:23,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2021-08-30 19:11:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:11:23,379 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:23,379 INFO L513 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] [2021-08-30 19:11:23,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:11:23,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash -311121200, now seen corresponding path program 1 times [2021-08-30 19:11:23,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:23,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727025215] [2021-08-30 19:11:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:23,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:23,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:23,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727025215] [2021-08-30 19:11:23,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727025215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:23,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:23,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:23,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418184383] [2021-08-30 19:11:23,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:23,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:23,453 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:23,729 INFO L93 Difference]: Finished difference Result 79 states and 139 transitions. [2021-08-30 19:11:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:23,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 19:11:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:23,739 INFO L225 Difference]: With dead ends: 79 [2021-08-30 19:11:23,739 INFO L226 Difference]: Without dead ends: 79 [2021-08-30 19:11:23,740 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:23,747 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 163 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.46ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:23,747 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 7 Invalid, 169 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 233.46ms Time] [2021-08-30 19:11:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-30 19:11:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-08-30 19:11:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.8493150684931507) internal successors, (135), 73 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 138 transitions. [2021-08-30 19:11:23,763 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 138 transitions. Word has length 22 [2021-08-30 19:11:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:23,763 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 138 transitions. [2021-08-30 19:11:23,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 138 transitions. [2021-08-30 19:11:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 19:11:23,765 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:23,765 INFO L513 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] [2021-08-30 19:11:23,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 19:11:23,766 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash 225254129, now seen corresponding path program 1 times [2021-08-30 19:11:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:23,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154638873] [2021-08-30 19:11:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:23,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:23,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:23,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154638873] [2021-08-30 19:11:23,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154638873] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:23,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:23,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:23,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762805501] [2021-08-30 19:11:23,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:23,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:23,867 INFO L87 Difference]: Start difference. First operand 77 states and 138 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:24,107 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2021-08-30 19:11:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 19:11:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:24,109 INFO L225 Difference]: With dead ends: 82 [2021-08-30 19:11:24,109 INFO L226 Difference]: Without dead ends: 82 [2021-08-30 19:11:24,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:24,110 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 144 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 154.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 191.75ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:24,111 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 7 Invalid, 187 Unknown, 0 Unchecked, 8.18ms Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 191.75ms Time] [2021-08-30 19:11:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-30 19:11:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-08-30 19:11:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 76 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 140 transitions. [2021-08-30 19:11:24,119 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 140 transitions. Word has length 23 [2021-08-30 19:11:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:24,120 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 140 transitions. [2021-08-30 19:11:24,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 140 transitions. [2021-08-30 19:11:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 19:11:24,121 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:24,121 INFO L513 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] [2021-08-30 19:11:24,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 19:11:24,121 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1054609549, now seen corresponding path program 1 times [2021-08-30 19:11:24,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:24,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526993074] [2021-08-30 19:11:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:24,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:24,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:24,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526993074] [2021-08-30 19:11:24,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526993074] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:24,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:24,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:24,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790583622] [2021-08-30 19:11:24,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:24,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:24,188 INFO L87 Difference]: Start difference. First operand 80 states and 140 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:24,403 INFO L93 Difference]: Finished difference Result 149 states and 262 transitions. [2021-08-30 19:11:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 19:11:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:24,405 INFO L225 Difference]: With dead ends: 149 [2021-08-30 19:11:24,406 INFO L226 Difference]: Without dead ends: 149 [2021-08-30 19:11:24,406 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:24,407 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 180 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.36ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:24,407 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 7 Invalid, 151 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 182.36ms Time] [2021-08-30 19:11:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-08-30 19:11:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-08-30 19:11:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.8041958041958042) internal successors, (258), 143 states have internal predecessors, (258), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 261 transitions. [2021-08-30 19:11:24,417 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 261 transitions. Word has length 23 [2021-08-30 19:11:24,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:24,418 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 261 transitions. [2021-08-30 19:11:24,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 261 transitions. [2021-08-30 19:11:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 19:11:24,419 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:24,419 INFO L513 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] [2021-08-30 19:11:24,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 19:11:24,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash -43492299, now seen corresponding path program 1 times [2021-08-30 19:11:24,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:24,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336412847] [2021-08-30 19:11:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:24,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:24,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:24,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336412847] [2021-08-30 19:11:24,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336412847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:24,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:24,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:24,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631476441] [2021-08-30 19:11:24,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:24,473 INFO L87 Difference]: Start difference. First operand 147 states and 261 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:24,662 INFO L93 Difference]: Finished difference Result 189 states and 336 transitions. [2021-08-30 19:11:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-30 19:11:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:24,665 INFO L225 Difference]: With dead ends: 189 [2021-08-30 19:11:24,665 INFO L226 Difference]: Without dead ends: 189 [2021-08-30 19:11:24,665 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:24,669 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 117 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.68ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:24,672 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 7 Invalid, 204 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 160.68ms Time] [2021-08-30 19:11:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-30 19:11:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 147. [2021-08-30 19:11:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.7902097902097902) internal successors, (256), 143 states have internal predecessors, (256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 259 transitions. [2021-08-30 19:11:24,686 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 259 transitions. Word has length 23 [2021-08-30 19:11:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:24,686 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 259 transitions. [2021-08-30 19:11:24,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 259 transitions. [2021-08-30 19:11:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 19:11:24,688 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:24,688 INFO L513 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] [2021-08-30 19:11:24,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 19:11:24,689 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:24,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1667055749, now seen corresponding path program 1 times [2021-08-30 19:11:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:24,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478762630] [2021-08-30 19:11:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:24,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:24,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:24,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478762630] [2021-08-30 19:11:24,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478762630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:24,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:24,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:24,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112354287] [2021-08-30 19:11:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:24,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:24,743 INFO L87 Difference]: Start difference. First operand 147 states and 259 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:24,913 INFO L93 Difference]: Finished difference Result 273 states and 486 transitions. [2021-08-30 19:11:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-30 19:11:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:24,915 INFO L225 Difference]: With dead ends: 273 [2021-08-30 19:11:24,915 INFO L226 Difference]: Without dead ends: 273 [2021-08-30 19:11:24,916 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:24,916 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 171 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.16ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:24,917 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 7 Invalid, 147 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 139.16ms Time] [2021-08-30 19:11:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-30 19:11:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 199. [2021-08-30 19:11:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 195 states have (on average 1.7743589743589743) internal successors, (346), 195 states have internal predecessors, (346), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 349 transitions. [2021-08-30 19:11:24,927 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 349 transitions. Word has length 24 [2021-08-30 19:11:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 349 transitions. [2021-08-30 19:11:24,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 349 transitions. [2021-08-30 19:11:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 19:11:24,929 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:24,929 INFO L513 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] [2021-08-30 19:11:24,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 19:11:24,929 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash 655938499, now seen corresponding path program 1 times [2021-08-30 19:11:24,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:24,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626185719] [2021-08-30 19:11:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:24,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:24,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:24,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626185719] [2021-08-30 19:11:24,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626185719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:24,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:24,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:24,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555225123] [2021-08-30 19:11:24,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:24,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:24,980 INFO L87 Difference]: Start difference. First operand 199 states and 349 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:25,148 INFO L93 Difference]: Finished difference Result 281 states and 488 transitions. [2021-08-30 19:11:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:25,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-30 19:11:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:25,151 INFO L225 Difference]: With dead ends: 281 [2021-08-30 19:11:25,151 INFO L226 Difference]: Without dead ends: 281 [2021-08-30 19:11:25,152 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:25,154 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 151 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.59ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:25,157 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 7 Invalid, 171 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 141.59ms Time] [2021-08-30 19:11:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-08-30 19:11:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2021-08-30 19:11:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 275 states have (on average 1.76) internal successors, (484), 275 states have internal predecessors, (484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 487 transitions. [2021-08-30 19:11:25,180 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 487 transitions. Word has length 24 [2021-08-30 19:11:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:25,180 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 487 transitions. [2021-08-30 19:11:25,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 487 transitions. [2021-08-30 19:11:25,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 19:11:25,188 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:25,189 INFO L513 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] [2021-08-30 19:11:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 19:11:25,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash 139334408, now seen corresponding path program 1 times [2021-08-30 19:11:25,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:25,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147674692] [2021-08-30 19:11:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:25,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:25,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:25,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147674692] [2021-08-30 19:11:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147674692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:25,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:25,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:25,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421093457] [2021-08-30 19:11:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:25,242 INFO L87 Difference]: Start difference. First operand 279 states and 487 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:25,419 INFO L93 Difference]: Finished difference Result 287 states and 492 transitions. [2021-08-30 19:11:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-30 19:11:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:25,421 INFO L225 Difference]: With dead ends: 287 [2021-08-30 19:11:25,421 INFO L226 Difference]: Without dead ends: 287 [2021-08-30 19:11:25,421 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:25,421 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.55ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:25,422 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 7 Invalid, 179 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 152.55ms Time] [2021-08-30 19:11:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-08-30 19:11:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2021-08-30 19:11:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 1.7366548042704626) internal successors, (488), 281 states have internal predecessors, (488), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 491 transitions. [2021-08-30 19:11:25,429 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 491 transitions. Word has length 25 [2021-08-30 19:11:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:25,429 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 491 transitions. [2021-08-30 19:11:25,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 491 transitions. [2021-08-30 19:11:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 19:11:25,430 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:25,431 INFO L513 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] [2021-08-30 19:11:25,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 19:11:25,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1140529270, now seen corresponding path program 1 times [2021-08-30 19:11:25,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:25,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41462855] [2021-08-30 19:11:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:25,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:25,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:25,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41462855] [2021-08-30 19:11:25,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41462855] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:25,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:25,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:25,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205097413] [2021-08-30 19:11:25,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:25,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:25,510 INFO L87 Difference]: Start difference. First operand 285 states and 491 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:25,678 INFO L93 Difference]: Finished difference Result 523 states and 908 transitions. [2021-08-30 19:11:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-30 19:11:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:25,681 INFO L225 Difference]: With dead ends: 523 [2021-08-30 19:11:25,681 INFO L226 Difference]: Without dead ends: 523 [2021-08-30 19:11:25,681 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:25,682 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 164 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.92ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:25,683 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 7 Invalid, 145 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 139.92ms Time] [2021-08-30 19:11:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-08-30 19:11:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 393. [2021-08-30 19:11:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 389 states have (on average 1.7069408740359897) internal successors, (664), 389 states have internal predecessors, (664), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 667 transitions. [2021-08-30 19:11:25,694 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 667 transitions. Word has length 25 [2021-08-30 19:11:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:25,695 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 667 transitions. [2021-08-30 19:11:25,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 667 transitions. [2021-08-30 19:11:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 19:11:25,696 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:25,696 INFO L513 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] [2021-08-30 19:11:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 19:11:25,697 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2143320776, now seen corresponding path program 1 times [2021-08-30 19:11:25,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:25,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761860675] [2021-08-30 19:11:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:25,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:25,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:25,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761860675] [2021-08-30 19:11:25,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761860675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:25,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:25,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:25,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447764310] [2021-08-30 19:11:25,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:25,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:25,749 INFO L87 Difference]: Start difference. First operand 393 states and 667 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:25,920 INFO L93 Difference]: Finished difference Result 547 states and 920 transitions. [2021-08-30 19:11:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:25,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-30 19:11:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:25,924 INFO L225 Difference]: With dead ends: 547 [2021-08-30 19:11:25,924 INFO L226 Difference]: Without dead ends: 547 [2021-08-30 19:11:25,925 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:25,926 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 145 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.93ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:25,926 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 7 Invalid, 172 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 140.93ms Time] [2021-08-30 19:11:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-08-30 19:11:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2021-08-30 19:11:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 541 states have (on average 1.6931608133086875) internal successors, (916), 541 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 919 transitions. [2021-08-30 19:11:25,944 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 919 transitions. Word has length 25 [2021-08-30 19:11:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:25,945 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 919 transitions. [2021-08-30 19:11:25,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 919 transitions. [2021-08-30 19:11:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:25,946 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:25,947 INFO L513 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] [2021-08-30 19:11:25,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 19:11:25,947 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash -996454920, now seen corresponding path program 1 times [2021-08-30 19:11:25,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:25,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045761296] [2021-08-30 19:11:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:25,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:25,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:25,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045761296] [2021-08-30 19:11:25,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045761296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:25,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:25,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:25,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074398923] [2021-08-30 19:11:25,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:25,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:25,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:25,993 INFO L87 Difference]: Start difference. First operand 545 states and 919 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:26,162 INFO L93 Difference]: Finished difference Result 555 states and 920 transitions. [2021-08-30 19:11:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:26,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:26,166 INFO L225 Difference]: With dead ends: 555 [2021-08-30 19:11:26,166 INFO L226 Difference]: Without dead ends: 555 [2021-08-30 19:11:26,166 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:26,167 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 141 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.56ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:26,167 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 7 Invalid, 175 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 144.56ms Time] [2021-08-30 19:11:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-08-30 19:11:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 553. [2021-08-30 19:11:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 549 states have (on average 1.668488160291439) internal successors, (916), 549 states have internal predecessors, (916), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 919 transitions. [2021-08-30 19:11:26,182 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 919 transitions. Word has length 26 [2021-08-30 19:11:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:26,182 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 919 transitions. [2021-08-30 19:11:26,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 919 transitions. [2021-08-30 19:11:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:26,183 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:26,183 INFO L513 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] [2021-08-30 19:11:26,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-30 19:11:26,184 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2018648698, now seen corresponding path program 1 times [2021-08-30 19:11:26,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:26,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315105262] [2021-08-30 19:11:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:26,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:26,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:26,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315105262] [2021-08-30 19:11:26,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315105262] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:26,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:26,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:26,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057425096] [2021-08-30 19:11:26,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:26,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:26,251 INFO L87 Difference]: Start difference. First operand 553 states and 919 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:26,405 INFO L93 Difference]: Finished difference Result 1003 states and 1680 transitions. [2021-08-30 19:11:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:26,410 INFO L225 Difference]: With dead ends: 1003 [2021-08-30 19:11:26,410 INFO L226 Difference]: Without dead ends: 1003 [2021-08-30 19:11:26,410 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:26,411 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 157 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.41ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:26,411 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 7 Invalid, 143 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 127.41ms Time] [2021-08-30 19:11:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-08-30 19:11:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 777. [2021-08-30 19:11:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 773 states have (on average 1.630012936610608) internal successors, (1260), 773 states have internal predecessors, (1260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1263 transitions. [2021-08-30 19:11:26,437 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1263 transitions. Word has length 26 [2021-08-30 19:11:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:26,437 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 1263 transitions. [2021-08-30 19:11:26,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1263 transitions. [2021-08-30 19:11:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:11:26,439 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:26,439 INFO L513 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] [2021-08-30 19:11:26,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 19:11:26,439 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1007531448, now seen corresponding path program 1 times [2021-08-30 19:11:26,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:26,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411158446] [2021-08-30 19:11:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:26,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:26,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411158446] [2021-08-30 19:11:26,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411158446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:26,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:26,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:26,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146388916] [2021-08-30 19:11:26,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:26,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:26,500 INFO L87 Difference]: Start difference. First operand 777 states and 1263 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:26,660 INFO L93 Difference]: Finished difference Result 1067 states and 1720 transitions. [2021-08-30 19:11:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:26,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-30 19:11:26,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:26,665 INFO L225 Difference]: With dead ends: 1067 [2021-08-30 19:11:26,665 INFO L226 Difference]: Without dead ends: 1067 [2021-08-30 19:11:26,666 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:26,666 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 139 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.71ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:26,666 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 7 Invalid, 173 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 132.71ms Time] [2021-08-30 19:11:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-08-30 19:11:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2021-08-30 19:11:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1061 states have (on average 1.6173421300659756) internal successors, (1716), 1061 states have internal predecessors, (1716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1719 transitions. [2021-08-30 19:11:26,691 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1719 transitions. Word has length 26 [2021-08-30 19:11:26,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:26,692 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1719 transitions. [2021-08-30 19:11:26,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1719 transitions. [2021-08-30 19:11:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:26,694 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:26,694 INFO L513 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] [2021-08-30 19:11:26,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 19:11:26,694 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:26,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1846185379, now seen corresponding path program 1 times [2021-08-30 19:11:26,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:26,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44274609] [2021-08-30 19:11:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:26,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:26,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:26,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44274609] [2021-08-30 19:11:26,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44274609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:26,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:26,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:26,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931985369] [2021-08-30 19:11:26,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:26,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:26,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:26,742 INFO L87 Difference]: Start difference. First operand 1065 states and 1719 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:26,909 INFO L93 Difference]: Finished difference Result 1083 states and 1720 transitions. [2021-08-30 19:11:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-08-30 19:11:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:26,913 INFO L225 Difference]: With dead ends: 1083 [2021-08-30 19:11:26,914 INFO L226 Difference]: Without dead ends: 1083 [2021-08-30 19:11:26,914 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:26,914 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 140 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.65ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:26,915 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 7 Invalid, 171 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 140.65ms Time] [2021-08-30 19:11:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-08-30 19:11:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1081. [2021-08-30 19:11:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1077 states have (on average 1.5933147632311977) internal successors, (1716), 1077 states have internal predecessors, (1716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1719 transitions. [2021-08-30 19:11:26,935 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1719 transitions. Word has length 27 [2021-08-30 19:11:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:26,935 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 1719 transitions. [2021-08-30 19:11:26,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1719 transitions. [2021-08-30 19:11:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:26,936 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:26,937 INFO L513 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] [2021-08-30 19:11:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-30 19:11:26,937 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:26,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1168918239, now seen corresponding path program 1 times [2021-08-30 19:11:26,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:26,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136005016] [2021-08-30 19:11:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:26,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:26,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:26,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136005016] [2021-08-30 19:11:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136005016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:26,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:26,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:26,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579395007] [2021-08-30 19:11:26,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:26,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:26,974 INFO L87 Difference]: Start difference. First operand 1081 states and 1719 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:27,141 INFO L93 Difference]: Finished difference Result 1931 states and 3096 transitions. [2021-08-30 19:11:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-08-30 19:11:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:27,155 INFO L225 Difference]: With dead ends: 1931 [2021-08-30 19:11:27,155 INFO L226 Difference]: Without dead ends: 1931 [2021-08-30 19:11:27,155 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:27,157 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 150 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.97ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:27,157 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 7 Invalid, 141 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 135.97ms Time] [2021-08-30 19:11:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-08-30 19:11:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1545. [2021-08-30 19:11:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1541 states have (on average 1.5496430889033095) internal successors, (2388), 1541 states have internal predecessors, (2388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2391 transitions. [2021-08-30 19:11:27,189 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2391 transitions. Word has length 27 [2021-08-30 19:11:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:27,191 INFO L470 AbstractCegarLoop]: Abstraction has 1545 states and 2391 transitions. [2021-08-30 19:11:27,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2391 transitions. [2021-08-30 19:11:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 19:11:27,194 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:27,194 INFO L513 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] [2021-08-30 19:11:27,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-30 19:11:27,195 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:27,195 INFO L82 PathProgramCache]: Analyzing trace with hash 157800989, now seen corresponding path program 1 times [2021-08-30 19:11:27,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:27,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189438536] [2021-08-30 19:11:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:27,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:27,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:27,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189438536] [2021-08-30 19:11:27,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189438536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:27,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:27,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:27,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223009005] [2021-08-30 19:11:27,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:27,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:27,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:27,243 INFO L87 Difference]: Start difference. First operand 1545 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:27,432 INFO L93 Difference]: Finished difference Result 2091 states and 3208 transitions. [2021-08-30 19:11:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:27,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-08-30 19:11:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:27,440 INFO L225 Difference]: With dead ends: 2091 [2021-08-30 19:11:27,440 INFO L226 Difference]: Without dead ends: 2091 [2021-08-30 19:11:27,441 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:27,442 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 133 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.44ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:27,442 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 7 Invalid, 174 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 154.44ms Time] [2021-08-30 19:11:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-08-30 19:11:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2089. [2021-08-30 19:11:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2085 states have (on average 1.5366906474820143) internal successors, (3204), 2085 states have internal predecessors, (3204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3207 transitions. [2021-08-30 19:11:27,490 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3207 transitions. Word has length 27 [2021-08-30 19:11:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:27,491 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 3207 transitions. [2021-08-30 19:11:27,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3207 transitions. [2021-08-30 19:11:27,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:27,493 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:27,494 INFO L513 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] [2021-08-30 19:11:27,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-30 19:11:27,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1876941805, now seen corresponding path program 1 times [2021-08-30 19:11:27,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:27,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421565959] [2021-08-30 19:11:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:27,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:27,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:27,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421565959] [2021-08-30 19:11:27,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421565959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:27,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:27,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:27,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557739224] [2021-08-30 19:11:27,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:27,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:27,549 INFO L87 Difference]: Start difference. First operand 2089 states and 3207 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:27,729 INFO L93 Difference]: Finished difference Result 2123 states and 3208 transitions. [2021-08-30 19:11:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-08-30 19:11:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:27,737 INFO L225 Difference]: With dead ends: 2123 [2021-08-30 19:11:27,737 INFO L226 Difference]: Without dead ends: 2123 [2021-08-30 19:11:27,737 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:27,738 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 139 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.43ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:27,738 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 7 Invalid, 167 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 146.43ms Time] [2021-08-30 19:11:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2021-08-30 19:11:27,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2121. [2021-08-30 19:11:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2117 states have (on average 1.5134624468587623) internal successors, (3204), 2117 states have internal predecessors, (3204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 3207 transitions. [2021-08-30 19:11:27,783 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 3207 transitions. Word has length 28 [2021-08-30 19:11:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:27,783 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 3207 transitions. [2021-08-30 19:11:27,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 3207 transitions. [2021-08-30 19:11:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:27,786 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:27,786 INFO L513 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] [2021-08-30 19:11:27,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 19:11:27,786 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash 597078127, now seen corresponding path program 1 times [2021-08-30 19:11:27,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:27,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409465105] [2021-08-30 19:11:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:27,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:27,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:27,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409465105] [2021-08-30 19:11:27,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409465105] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:27,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:27,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:27,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270414916] [2021-08-30 19:11:27,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:27,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:27,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:27,832 INFO L87 Difference]: Start difference. First operand 2121 states and 3207 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:27,999 INFO L93 Difference]: Finished difference Result 3723 states and 5672 transitions. [2021-08-30 19:11:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-08-30 19:11:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:28,029 INFO L225 Difference]: With dead ends: 3723 [2021-08-30 19:11:28,029 INFO L226 Difference]: Without dead ends: 3723 [2021-08-30 19:11:28,029 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:28,030 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 143 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.48ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:28,030 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 7 Invalid, 139 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 125.48ms Time] [2021-08-30 19:11:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-08-30 19:11:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3081. [2021-08-30 19:11:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 3077 states have (on average 1.4676633084172896) internal successors, (4516), 3077 states have internal predecessors, (4516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4519 transitions. [2021-08-30 19:11:28,108 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4519 transitions. Word has length 28 [2021-08-30 19:11:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:28,108 INFO L470 AbstractCegarLoop]: Abstraction has 3081 states and 4519 transitions. [2021-08-30 19:11:28,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4519 transitions. [2021-08-30 19:11:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:11:28,113 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:28,113 INFO L513 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] [2021-08-30 19:11:28,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-30 19:11:28,114 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash -414039123, now seen corresponding path program 1 times [2021-08-30 19:11:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:28,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433293730] [2021-08-30 19:11:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:28,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:28,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:28,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433293730] [2021-08-30 19:11:28,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433293730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:28,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:28,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:28,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096261169] [2021-08-30 19:11:28,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:28,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:28,158 INFO L87 Difference]: Start difference. First operand 3081 states and 4519 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:28,365 INFO L93 Difference]: Finished difference Result 4107 states and 5960 transitions. [2021-08-30 19:11:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-08-30 19:11:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:28,379 INFO L225 Difference]: With dead ends: 4107 [2021-08-30 19:11:28,379 INFO L226 Difference]: Without dead ends: 4107 [2021-08-30 19:11:28,379 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:28,380 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 127 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.49ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:28,380 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 7 Invalid, 175 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 168.49ms Time] [2021-08-30 19:11:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-08-30 19:11:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4105. [2021-08-30 19:11:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4101 states have (on average 1.4523287003169958) internal successors, (5956), 4101 states have internal predecessors, (5956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 5959 transitions. [2021-08-30 19:11:28,461 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 5959 transitions. Word has length 28 [2021-08-30 19:11:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:28,462 INFO L470 AbstractCegarLoop]: Abstraction has 4105 states and 5959 transitions. [2021-08-30 19:11:28,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 5959 transitions. [2021-08-30 19:11:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:28,466 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:28,466 INFO L513 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] [2021-08-30 19:11:28,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-30 19:11:28,467 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:28,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1329767858, now seen corresponding path program 1 times [2021-08-30 19:11:28,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:28,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935132899] [2021-08-30 19:11:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:28,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:28,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:28,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935132899] [2021-08-30 19:11:28,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935132899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:28,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:28,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:28,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535513410] [2021-08-30 19:11:28,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:28,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:28,514 INFO L87 Difference]: Start difference. First operand 4105 states and 5959 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:28,711 INFO L93 Difference]: Finished difference Result 4171 states and 5960 transitions. [2021-08-30 19:11:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 19:11:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:28,740 INFO L225 Difference]: With dead ends: 4171 [2021-08-30 19:11:28,740 INFO L226 Difference]: Without dead ends: 4171 [2021-08-30 19:11:28,740 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:28,742 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 138 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:28,742 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 159.94ms Time] [2021-08-30 19:11:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-08-30 19:11:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4169. [2021-08-30 19:11:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 4165 states have (on average 1.4300120048019207) internal successors, (5956), 4165 states have internal predecessors, (5956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5959 transitions. [2021-08-30 19:11:28,852 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5959 transitions. Word has length 29 [2021-08-30 19:11:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:28,853 INFO L470 AbstractCegarLoop]: Abstraction has 4169 states and 5959 transitions. [2021-08-30 19:11:28,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5959 transitions. [2021-08-30 19:11:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:28,859 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:28,859 INFO L513 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] [2021-08-30 19:11:28,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-30 19:11:28,860 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:28,860 INFO L82 PathProgramCache]: Analyzing trace with hash 49904180, now seen corresponding path program 1 times [2021-08-30 19:11:28,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:28,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135088222] [2021-08-30 19:11:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:28,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:28,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:28,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135088222] [2021-08-30 19:11:28,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135088222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:28,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:28,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:28,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172895747] [2021-08-30 19:11:28,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:28,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:28,901 INFO L87 Difference]: Start difference. First operand 4169 states and 5959 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:29,075 INFO L93 Difference]: Finished difference Result 7179 states and 10312 transitions. [2021-08-30 19:11:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 19:11:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:29,090 INFO L225 Difference]: With dead ends: 7179 [2021-08-30 19:11:29,090 INFO L226 Difference]: Without dead ends: 7179 [2021-08-30 19:11:29,090 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:29,091 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.85ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:29,091 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 7 Invalid, 137 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 127.85ms Time] [2021-08-30 19:11:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2021-08-30 19:11:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 6153. [2021-08-30 19:11:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6149 states have (on average 1.3849406407545943) internal successors, (8516), 6149 states have internal predecessors, (8516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8519 transitions. [2021-08-30 19:11:29,264 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8519 transitions. Word has length 29 [2021-08-30 19:11:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:29,264 INFO L470 AbstractCegarLoop]: Abstraction has 6153 states and 8519 transitions. [2021-08-30 19:11:29,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8519 transitions. [2021-08-30 19:11:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:11:29,274 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:29,274 INFO L513 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] [2021-08-30 19:11:29,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-30 19:11:29,275 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash -961213070, now seen corresponding path program 1 times [2021-08-30 19:11:29,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:29,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388646317] [2021-08-30 19:11:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:29,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:29,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:29,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388646317] [2021-08-30 19:11:29,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388646317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:29,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:29,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:29,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782510848] [2021-08-30 19:11:29,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:29,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:29,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:29,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:29,323 INFO L87 Difference]: Start difference. First operand 6153 states and 8519 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:29,544 INFO L93 Difference]: Finished difference Result 8075 states and 11016 transitions. [2021-08-30 19:11:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-08-30 19:11:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:29,559 INFO L225 Difference]: With dead ends: 8075 [2021-08-30 19:11:29,560 INFO L226 Difference]: Without dead ends: 8075 [2021-08-30 19:11:29,560 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:29,560 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 121 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.98ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:29,561 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 7 Invalid, 176 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 174.98ms Time] [2021-08-30 19:11:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8075 states. [2021-08-30 19:11:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8075 to 8073. [2021-08-30 19:11:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8069 states have (on average 1.3647292105589293) internal successors, (11012), 8069 states have internal predecessors, (11012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 11015 transitions. [2021-08-30 19:11:29,710 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 11015 transitions. Word has length 29 [2021-08-30 19:11:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:29,711 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 11015 transitions. [2021-08-30 19:11:29,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 11015 transitions. [2021-08-30 19:11:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:29,720 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:29,720 INFO L513 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] [2021-08-30 19:11:29,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-30 19:11:29,721 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1547245026, now seen corresponding path program 1 times [2021-08-30 19:11:29,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:29,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395006688] [2021-08-30 19:11:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:29,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:29,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:29,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395006688] [2021-08-30 19:11:29,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395006688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:29,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:29,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:29,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886293196] [2021-08-30 19:11:29,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:29,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:29,769 INFO L87 Difference]: Start difference. First operand 8073 states and 11015 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:29,955 INFO L93 Difference]: Finished difference Result 8203 states and 11016 transitions. [2021-08-30 19:11:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:29,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-08-30 19:11:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:29,971 INFO L225 Difference]: With dead ends: 8203 [2021-08-30 19:11:29,972 INFO L226 Difference]: Without dead ends: 8203 [2021-08-30 19:11:29,972 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:29,973 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 137 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.45ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:29,973 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 7 Invalid, 159 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 137.45ms Time] [2021-08-30 19:11:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2021-08-30 19:11:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 8201. [2021-08-30 19:11:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8197 states have (on average 1.3434183237769917) internal successors, (11012), 8197 states have internal predecessors, (11012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 11015 transitions. [2021-08-30 19:11:30,161 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 11015 transitions. Word has length 30 [2021-08-30 19:11:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:30,162 INFO L470 AbstractCegarLoop]: Abstraction has 8201 states and 11015 transitions. [2021-08-30 19:11:30,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 11015 transitions. [2021-08-30 19:11:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:30,171 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:30,172 INFO L513 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] [2021-08-30 19:11:30,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-30 19:11:30,172 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash 267381348, now seen corresponding path program 1 times [2021-08-30 19:11:30,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:30,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552918116] [2021-08-30 19:11:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:30,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:30,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:30,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:30,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552918116] [2021-08-30 19:11:30,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552918116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:30,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:30,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:30,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894378560] [2021-08-30 19:11:30,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:30,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:30,217 INFO L87 Difference]: Start difference. First operand 8201 states and 11015 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:30,385 INFO L93 Difference]: Finished difference Result 13835 states and 18568 transitions. [2021-08-30 19:11:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:30,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-08-30 19:11:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:30,414 INFO L225 Difference]: With dead ends: 13835 [2021-08-30 19:11:30,414 INFO L226 Difference]: Without dead ends: 13835 [2021-08-30 19:11:30,415 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:30,415 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 129 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.86ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:30,419 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 7 Invalid, 135 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 108.86ms Time] [2021-08-30 19:11:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2021-08-30 19:11:30,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 12297. [2021-08-30 19:11:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12297 states, 12293 states have (on average 1.3018791181973481) internal successors, (16004), 12293 states have internal predecessors, (16004), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12297 states to 12297 states and 16007 transitions. [2021-08-30 19:11:30,646 INFO L78 Accepts]: Start accepts. Automaton has 12297 states and 16007 transitions. Word has length 30 [2021-08-30 19:11:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:30,646 INFO L470 AbstractCegarLoop]: Abstraction has 12297 states and 16007 transitions. [2021-08-30 19:11:30,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 12297 states and 16007 transitions. [2021-08-30 19:11:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-30 19:11:30,663 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:30,664 INFO L513 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] [2021-08-30 19:11:30,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-30 19:11:30,665 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash -743735902, now seen corresponding path program 1 times [2021-08-30 19:11:30,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:30,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472878445] [2021-08-30 19:11:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:30,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:30,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:30,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472878445] [2021-08-30 19:11:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472878445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:30,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:30,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:30,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017988361] [2021-08-30 19:11:30,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:30,713 INFO L87 Difference]: Start difference. First operand 12297 states and 16007 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:30,913 INFO L93 Difference]: Finished difference Result 15883 states and 20232 transitions. [2021-08-30 19:11:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-08-30 19:11:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:30,942 INFO L225 Difference]: With dead ends: 15883 [2021-08-30 19:11:30,942 INFO L226 Difference]: Without dead ends: 15883 [2021-08-30 19:11:30,943 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:30,943 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.59ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:30,945 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 7 Invalid, 177 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 132.59ms Time] [2021-08-30 19:11:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15883 states. [2021-08-30 19:11:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15883 to 15881. [2021-08-30 19:11:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15881 states, 15877 states have (on average 1.2740442149020597) internal successors, (20228), 15877 states have internal predecessors, (20228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15881 states to 15881 states and 20231 transitions. [2021-08-30 19:11:31,280 INFO L78 Accepts]: Start accepts. Automaton has 15881 states and 20231 transitions. Word has length 30 [2021-08-30 19:11:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:31,281 INFO L470 AbstractCegarLoop]: Abstraction has 15881 states and 20231 transitions. [2021-08-30 19:11:31,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15881 states and 20231 transitions. [2021-08-30 19:11:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:31,298 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:31,298 INFO L513 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] [2021-08-30 19:11:31,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-30 19:11:31,299 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash -300897017, now seen corresponding path program 1 times [2021-08-30 19:11:31,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:31,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466846461] [2021-08-30 19:11:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:31,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:31,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:31,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466846461] [2021-08-30 19:11:31,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466846461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:31,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994088656] [2021-08-30 19:11:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:31,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:31,337 INFO L87 Difference]: Start difference. First operand 15881 states and 20231 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:31,540 INFO L93 Difference]: Finished difference Result 16139 states and 20232 transitions. [2021-08-30 19:11:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-08-30 19:11:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:31,573 INFO L225 Difference]: With dead ends: 16139 [2021-08-30 19:11:31,574 INFO L226 Difference]: Without dead ends: 16139 [2021-08-30 19:11:31,574 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:31,575 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.72ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:31,575 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 7 Invalid, 155 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 136.72ms Time] [2021-08-30 19:11:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16139 states. [2021-08-30 19:11:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16139 to 16137. [2021-08-30 19:11:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16137 states, 16133 states have (on average 1.2538275584206284) internal successors, (20228), 16133 states have internal predecessors, (20228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16137 states to 16137 states and 20231 transitions. [2021-08-30 19:11:31,837 INFO L78 Accepts]: Start accepts. Automaton has 16137 states and 20231 transitions. Word has length 31 [2021-08-30 19:11:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:31,837 INFO L470 AbstractCegarLoop]: Abstraction has 16137 states and 20231 transitions. [2021-08-30 19:11:31,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 16137 states and 20231 transitions. [2021-08-30 19:11:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:31,855 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:31,855 INFO L513 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] [2021-08-30 19:11:31,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-30 19:11:31,855 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:31,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1580760695, now seen corresponding path program 1 times [2021-08-30 19:11:31,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:31,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895012871] [2021-08-30 19:11:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:31,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:31,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:31,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895012871] [2021-08-30 19:11:31,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895012871] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:31,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:31,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154454451] [2021-08-30 19:11:31,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:31,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:31,894 INFO L87 Difference]: Start difference. First operand 16137 states and 20231 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:32,140 INFO L93 Difference]: Finished difference Result 31243 states and 37384 transitions. [2021-08-30 19:11:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-08-30 19:11:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:32,187 INFO L225 Difference]: With dead ends: 31243 [2021-08-30 19:11:32,188 INFO L226 Difference]: Without dead ends: 31243 [2021-08-30 19:11:32,188 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:32,189 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 140 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.88ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:32,189 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 7 Invalid, 151 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 132.88ms Time] [2021-08-30 19:11:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31243 states. [2021-08-30 19:11:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31243 to 31241. [2021-08-30 19:11:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31241 states, 31237 states have (on average 1.1966578096488139) internal successors, (37380), 31237 states have internal predecessors, (37380), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31241 states to 31241 states and 37383 transitions. [2021-08-30 19:11:32,692 INFO L78 Accepts]: Start accepts. Automaton has 31241 states and 37383 transitions. Word has length 31 [2021-08-30 19:11:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:32,693 INFO L470 AbstractCegarLoop]: Abstraction has 31241 states and 37383 transitions. [2021-08-30 19:11:32,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 31241 states and 37383 transitions. [2021-08-30 19:11:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 19:11:32,720 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:32,720 INFO L513 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] [2021-08-30 19:11:32,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-30 19:11:32,720 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash -569643445, now seen corresponding path program 1 times [2021-08-30 19:11:32,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:32,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49069617] [2021-08-30 19:11:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:32,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:32,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:32,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49069617] [2021-08-30 19:11:32,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49069617] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:32,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:32,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:32,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582872376] [2021-08-30 19:11:32,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:32,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:32,756 INFO L87 Difference]: Start difference. First operand 31241 states and 37383 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:32,969 INFO L93 Difference]: Finished difference Result 33291 states and 39944 transitions. [2021-08-30 19:11:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-08-30 19:11:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:33,015 INFO L225 Difference]: With dead ends: 33291 [2021-08-30 19:11:33,016 INFO L226 Difference]: Without dead ends: 33291 [2021-08-30 19:11:33,016 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:33,017 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.78ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:33,017 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 7 Invalid, 164 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 110.78ms Time] [2021-08-30 19:11:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33291 states. [2021-08-30 19:11:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33291 to 31241. [2021-08-30 19:11:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31241 states, 31237 states have (on average 1.1802669910682844) internal successors, (36868), 31237 states have internal predecessors, (36868), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31241 states to 31241 states and 36871 transitions. [2021-08-30 19:11:33,471 INFO L78 Accepts]: Start accepts. Automaton has 31241 states and 36871 transitions. Word has length 31 [2021-08-30 19:11:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:33,471 INFO L470 AbstractCegarLoop]: Abstraction has 31241 states and 36871 transitions. [2021-08-30 19:11:33,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 31241 states and 36871 transitions. [2021-08-30 19:11:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 19:11:33,494 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:33,494 INFO L513 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] [2021-08-30 19:11:33,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-30 19:11:33,495 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:33,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1758725161, now seen corresponding path program 1 times [2021-08-30 19:11:33,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:33,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522033609] [2021-08-30 19:11:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:33,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:33,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:33,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522033609] [2021-08-30 19:11:33,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522033609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:33,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:33,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:33,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943389513] [2021-08-30 19:11:33,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:33,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:33,532 INFO L87 Difference]: Start difference. First operand 31241 states and 36871 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:33,981 INFO L93 Difference]: Finished difference Result 50697 states and 58375 transitions. [2021-08-30 19:11:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 19:11:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:34,079 INFO L225 Difference]: With dead ends: 50697 [2021-08-30 19:11:34,080 INFO L226 Difference]: Without dead ends: 50697 [2021-08-30 19:11:34,080 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:34,081 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 114 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 307.39ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:34,081 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 7 Invalid, 130 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 307.39ms Time] [2021-08-30 19:11:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50697 states. [2021-08-30 19:11:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50697 to 48649. [2021-08-30 19:11:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48649 states, 48645 states have (on average 1.1578579504573954) internal successors, (56324), 48645 states have internal predecessors, (56324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48649 states to 48649 states and 56327 transitions. [2021-08-30 19:11:34,787 INFO L78 Accepts]: Start accepts. Automaton has 48649 states and 56327 transitions. Word has length 32 [2021-08-30 19:11:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:34,787 INFO L470 AbstractCegarLoop]: Abstraction has 48649 states and 56327 transitions. [2021-08-30 19:11:34,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 48649 states and 56327 transitions. [2021-08-30 19:11:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 19:11:34,826 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:11:34,826 INFO L513 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] [2021-08-30 19:11:34,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-30 19:11:34,826 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:11:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:11:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1525124885, now seen corresponding path program 1 times [2021-08-30 19:11:34,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:11:34,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813899399] [2021-08-30 19:11:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:11:34,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:11:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:11:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:11:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:11:34,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:11:34,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813899399] [2021-08-30 19:11:34,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813899399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:11:34,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:11:34,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:11:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258645311] [2021-08-30 19:11:34,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:11:34,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:11:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:11:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:11:34,861 INFO L87 Difference]: Start difference. First operand 48649 states and 56327 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:11:35,168 INFO L93 Difference]: Finished difference Result 60935 states and 67590 transitions. [2021-08-30 19:11:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 19:11:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 19:11:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:11:35,169 INFO L225 Difference]: With dead ends: 60935 [2021-08-30 19:11:35,169 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:11:35,170 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:11:35,171 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 100 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.72ms IncrementalHoareTripleChecker+Time [2021-08-30 19:11:35,171 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 7 Invalid, 177 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 125.72ms Time] [2021-08-30 19:11:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:11:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:11:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 19:11:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:11:35,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-08-30 19:11:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:11:35,172 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:11:35,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:11:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:11:35,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:11:35,287 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-08-30 19:11:35,288 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-08-30 19:11:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-30 19:11:35,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:11:35,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:11:35 BoogieIcfgContainer [2021-08-30 19:11:35,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:11:35,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:11:35,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:11:35,311 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:11:35,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:22" (3/4) ... [2021-08-30 19:11:35,321 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:11:35,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-08-30 19:11:35,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:11:35,329 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:11:35,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-30 19:11:35,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-30 19:11:35,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 19:11:35,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:11:35,393 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:11:35,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:11:35,393 INFO L158 Benchmark]: Toolchain (without parser) took 13739.29ms. Allocated memory was 54.5MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 31.5MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 425.8MB. Max. memory is 16.1GB. [2021-08-30 19:11:35,393 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:11:35,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.06ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 31.4MB in the beginning and 59.0MB in the end (delta: -27.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-30 19:11:35,394 INFO L158 Benchmark]: Boogie Preprocessor took 56.26ms. Allocated memory is still 75.5MB. Free memory was 59.0MB in the beginning and 57.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:11:35,394 INFO L158 Benchmark]: RCFGBuilder took 333.00ms. Allocated memory is still 75.5MB. Free memory was 57.2MB in the beginning and 46.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 19:11:35,394 INFO L158 Benchmark]: TraceAbstraction took 12945.66ms. Allocated memory was 75.5MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 45.9MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 418.2MB. Max. memory is 16.1GB. [2021-08-30 19:11:35,394 INFO L158 Benchmark]: Witness Printer took 81.85ms. Allocated memory is still 2.1GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:11:35,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.06ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 31.4MB in the beginning and 59.0MB in the end (delta: -27.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.26ms. Allocated memory is still 75.5MB. Free memory was 59.0MB in the beginning and 57.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.00ms. Allocated memory is still 75.5MB. Free memory was 57.2MB in the beginning and 46.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12945.66ms. Allocated memory was 75.5MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 45.9MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 418.2MB. Max. memory is 16.1GB. * Witness Printer took 81.85ms. Allocated memory is still 2.1GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 177]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 12872.53ms, OverallIterations: 31, TraceHistogramMax: 1, EmptinessCheckTime: 216.70ms, AutomataDifference: 6940.41ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.53ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4255 SdHoareTripleChecker+Valid, 4744.79ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4255 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 3938.45ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4867 IncrementalHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 94 mSDtfsCounter, 4867 mSolverCounterSat, 60.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1002.58ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48649occurred in iteration=30, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 3598.84ms AutomataMinimizationTime, 31 MinimizatonAttempts, 8222 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 75.77ms SsaConstructionTime, 256.24ms SatisfiabilityAnalysisTime, 1325.34ms InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 2491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 19:11:35,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...