./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa --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 75fd132a1a39ad1f2927845122893235fdf65fe2225472c79a2e84525dcd60fe --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:47:34,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:47:34,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:47:34,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:47:34,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:47:34,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:47:34,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:47:34,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:47:34,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:47:34,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:47:34,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:47:34,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:47:34,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:47:34,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:47:34,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:47:34,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:47:34,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:47:34,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:47:34,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:47:34,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:47:34,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:47:34,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:47:34,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:47:34,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:47:34,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:47:34,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:47:34,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:47:34,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:47:34,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:47:34,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:47:34,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:47:34,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:47:34,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:47:34,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:47:34,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:47:34,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:47:34,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:47:34,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:47:34,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:47:34,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:47:34,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:47:34,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:47:34,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:47:34,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:47:34,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:47:34,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:47:34,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:47:34,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:47:34,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:47:34,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:47:34,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:47:34,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:47:34,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:47:34,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:47:34,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:47:34,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:47:34,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:47:34,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:47:34,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:47:34,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:47:34,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:47:34,469 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75fd132a1a39ad1f2927845122893235fdf65fe2225472c79a2e84525dcd60fe [2021-12-06 18:47:34,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:47:34,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:47:34,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:47:34,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:47:34,659 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:47:34,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2021-12-06 18:47:34,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/data/751c3728d/9fa7dc650073481aa4d2fbba15cccdbe/FLAG6ff3c79ee [2021-12-06 18:47:35,212 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:47:35,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2021-12-06 18:47:35,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/data/751c3728d/9fa7dc650073481aa4d2fbba15cccdbe/FLAG6ff3c79ee [2021-12-06 18:47:35,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/data/751c3728d/9fa7dc650073481aa4d2fbba15cccdbe [2021-12-06 18:47:35,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:47:35,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:47:35,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:47:35,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:47:35,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:47:35,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:47:35" (1/1) ... [2021-12-06 18:47:35,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4dfe00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:35, skipping insertion in model container [2021-12-06 18:47:35,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:47:35" (1/1) ... [2021-12-06 18:47:35,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:47:35,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:47:35,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2021-12-06 18:47:36,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:47:36,041 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:47:36,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-2.c[2073,2086] [2021-12-06 18:47:36,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:47:36,123 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:47:36,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36 WrapperNode [2021-12-06 18:47:36,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:47:36,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:47:36,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:47:36,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:47:36,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,190 INFO L137 Inliner]: procedures = 41, calls = 107, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1581 [2021-12-06 18:47:36,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:47:36,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:47:36,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:47:36,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:47:36,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:47:36,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:47:36,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:47:36,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:47:36,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (1/1) ... [2021-12-06 18:47:36,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:47:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:36,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:47:36,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:47:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-12-06 18:47:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-12-06 18:47:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:47:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-12-06 18:47:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-12-06 18:47:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-06 18:47:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-06 18:47:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-12-06 18:47:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-12-06 18:47:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-06 18:47:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-06 18:47:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-06 18:47:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-06 18:47:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-12-06 18:47:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-12-06 18:47:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-12-06 18:47:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-12-06 18:47:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-12-06 18:47:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-12-06 18:47:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-06 18:47:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-06 18:47:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:47:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-06 18:47:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-06 18:47:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-12-06 18:47:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-12-06 18:47:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:47:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:47:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-12-06 18:47:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-12-06 18:47:36,471 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:47:36,473 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:47:36,555 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-06 18:47:36,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-06 18:47:36,635 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-06 18:47:36,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-06 18:47:36,654 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,655 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,658 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,668 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,685 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,687 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:36,689 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 18:47:37,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-12-06 18:47:37,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-12-06 18:47:37,064 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-12-06 18:47:37,089 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:47:37,098 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:47:37,099 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:47:37,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:47:37 BoogieIcfgContainer [2021-12-06 18:47:37,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:47:37,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:47:37,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:47:37,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:47:37,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:47:35" (1/3) ... [2021-12-06 18:47:37,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a08891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:47:37, skipping insertion in model container [2021-12-06 18:47:37,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:47:36" (2/3) ... [2021-12-06 18:47:37,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a08891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:47:37, skipping insertion in model container [2021-12-06 18:47:37,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:47:37" (3/3) ... [2021-12-06 18:47:37,107 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2021-12-06 18:47:37,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:47:37,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:47:37,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:47:37,148 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:47:37,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:47:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 469 states, 367 states have (on average 1.5095367847411445) internal successors, (554), 386 states have internal predecessors, (554), 86 states have call successors, (86), 13 states have call predecessors, (86), 13 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-06 18:47:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 18:47:37,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:37,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:37,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937654, now seen corresponding path program 1 times [2021-12-06 18:47:37,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:37,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415161643] [2021-12-06 18:47:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:37,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:37,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:37,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415161643] [2021-12-06 18:47:37,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415161643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:37,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:37,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:37,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940277310] [2021-12-06 18:47:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:37,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:37,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,342 INFO L87 Difference]: Start difference. First operand has 469 states, 367 states have (on average 1.5095367847411445) internal successors, (554), 386 states have internal predecessors, (554), 86 states have call successors, (86), 13 states have call predecessors, (86), 13 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:37,475 INFO L93 Difference]: Finished difference Result 621 states and 922 transitions. [2021-12-06 18:47:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 18:47:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:37,495 INFO L225 Difference]: With dead ends: 621 [2021-12-06 18:47:37,495 INFO L226 Difference]: Without dead ends: 617 [2021-12-06 18:47:37,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,500 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 690 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:37,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 946 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-12-06 18:47:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 601. [2021-12-06 18:47:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 485 states have (on average 1.4721649484536083) internal successors, (714), 492 states have internal predecessors, (714), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-06 18:47:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 901 transitions. [2021-12-06 18:47:37,586 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 901 transitions. Word has length 8 [2021-12-06 18:47:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:37,586 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 901 transitions. [2021-12-06 18:47:37,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 901 transitions. [2021-12-06 18:47:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:47:37,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:37,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:37,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:47:37,587 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128949, now seen corresponding path program 1 times [2021-12-06 18:47:37,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:37,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632037533] [2021-12-06 18:47:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:37,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:37,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:37,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632037533] [2021-12-06 18:47:37,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632037533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:37,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:37,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:37,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78409073] [2021-12-06 18:47:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:37,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:37,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,630 INFO L87 Difference]: Start difference. First operand 601 states and 901 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:37,676 INFO L93 Difference]: Finished difference Result 603 states and 901 transitions. [2021-12-06 18:47:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:47:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:37,681 INFO L225 Difference]: With dead ends: 603 [2021-12-06 18:47:37,681 INFO L226 Difference]: Without dead ends: 603 [2021-12-06 18:47:37,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,682 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 384 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:37,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 942 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-06 18:47:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-12-06 18:47:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 485 states have (on average 1.4701030927835053) internal successors, (713), 492 states have internal predecessors, (713), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-06 18:47:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 900 transitions. [2021-12-06 18:47:37,711 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 900 transitions. Word has length 9 [2021-12-06 18:47:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:37,711 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 900 transitions. [2021-12-06 18:47:37,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 900 transitions. [2021-12-06 18:47:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:47:37,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:37,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:37,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:47:37,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 929451779, now seen corresponding path program 1 times [2021-12-06 18:47:37,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:37,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646716867] [2021-12-06 18:47:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:37,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:37,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:37,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646716867] [2021-12-06 18:47:37,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646716867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:37,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:37,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:47:37,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741041064] [2021-12-06 18:47:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:37,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:37,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,745 INFO L87 Difference]: Start difference. First operand 601 states and 900 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:37,817 INFO L93 Difference]: Finished difference Result 600 states and 899 transitions. [2021-12-06 18:47:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:37,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:47:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:37,823 INFO L225 Difference]: With dead ends: 600 [2021-12-06 18:47:37,823 INFO L226 Difference]: Without dead ends: 597 [2021-12-06 18:47:37,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,825 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 416 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:37,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 847 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-12-06 18:47:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 591. [2021-12-06 18:47:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 476 states have (on average 1.4516806722689075) internal successors, (691), 482 states have internal predecessors, (691), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-06 18:47:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 878 transitions. [2021-12-06 18:47:37,855 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 878 transitions. Word has length 9 [2021-12-06 18:47:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 878 transitions. [2021-12-06 18:47:37,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 878 transitions. [2021-12-06 18:47:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:47:37,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:37,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:37,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:47:37,857 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618303, now seen corresponding path program 1 times [2021-12-06 18:47:37,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:37,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141533729] [2021-12-06 18:47:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:37,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:37,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141533729] [2021-12-06 18:47:37,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141533729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:37,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:37,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:37,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114625763] [2021-12-06 18:47:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:37,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:37,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:37,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:37,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,894 INFO L87 Difference]: Start difference. First operand 591 states and 878 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:37,938 INFO L93 Difference]: Finished difference Result 594 states and 880 transitions. [2021-12-06 18:47:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 18:47:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:37,943 INFO L225 Difference]: With dead ends: 594 [2021-12-06 18:47:37,943 INFO L226 Difference]: Without dead ends: 591 [2021-12-06 18:47:37,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:37,945 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 0 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:37,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1329 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-06 18:47:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2021-12-06 18:47:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 476 states have (on average 1.449579831932773) internal successors, (690), 482 states have internal predecessors, (690), 93 states have call successors, (93), 18 states have call predecessors, (93), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-12-06 18:47:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 877 transitions. [2021-12-06 18:47:37,970 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 877 transitions. Word has length 13 [2021-12-06 18:47:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:37,970 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 877 transitions. [2021-12-06 18:47:37,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 877 transitions. [2021-12-06 18:47:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:47:37,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:37,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:37,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:47:37,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839995, now seen corresponding path program 1 times [2021-12-06 18:47:37,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:37,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829386187] [2021-12-06 18:47:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:37,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829386187] [2021-12-06 18:47:38,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829386187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:38,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749694053] [2021-12-06 18:47:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:38,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:38,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,016 INFO L87 Difference]: Start difference. First operand 591 states and 877 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:38,129 INFO L93 Difference]: Finished difference Result 835 states and 1220 transitions. [2021-12-06 18:47:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 18:47:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:38,137 INFO L225 Difference]: With dead ends: 835 [2021-12-06 18:47:38,137 INFO L226 Difference]: Without dead ends: 834 [2021-12-06 18:47:38,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,139 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 564 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:38,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 1040 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-12-06 18:47:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 791. [2021-12-06 18:47:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 649 states have (on average 1.4206471494607087) internal successors, (922), 641 states have internal predecessors, (922), 106 states have call successors, (106), 31 states have call predecessors, (106), 35 states have return successors, (136), 122 states have call predecessors, (136), 96 states have call successors, (136) [2021-12-06 18:47:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1164 transitions. [2021-12-06 18:47:38,173 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1164 transitions. Word has length 15 [2021-12-06 18:47:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:38,173 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1164 transitions. [2021-12-06 18:47:38,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1164 transitions. [2021-12-06 18:47:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 18:47:38,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:38,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:38,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:47:38,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1752786185, now seen corresponding path program 1 times [2021-12-06 18:47:38,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:38,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565259089] [2021-12-06 18:47:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:38,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565259089] [2021-12-06 18:47:38,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565259089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:38,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924642733] [2021-12-06 18:47:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:38,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,219 INFO L87 Difference]: Start difference. First operand 791 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:38,244 INFO L93 Difference]: Finished difference Result 867 states and 1260 transitions. [2021-12-06 18:47:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 18:47:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:38,251 INFO L225 Difference]: With dead ends: 867 [2021-12-06 18:47:38,251 INFO L226 Difference]: Without dead ends: 867 [2021-12-06 18:47:38,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,252 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 601 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:38,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 864 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-06 18:47:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 839. [2021-12-06 18:47:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 692 states have (on average 1.439306358381503) internal successors, (996), 695 states have internal predecessors, (996), 105 states have call successors, (105), 35 states have call predecessors, (105), 41 states have return successors, (127), 108 states have call predecessors, (127), 98 states have call successors, (127) [2021-12-06 18:47:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1228 transitions. [2021-12-06 18:47:38,278 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1228 transitions. Word has length 19 [2021-12-06 18:47:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:38,278 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1228 transitions. [2021-12-06 18:47:38,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1228 transitions. [2021-12-06 18:47:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 18:47:38,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:38,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:38,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:47:38,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:38,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:38,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1868596178, now seen corresponding path program 1 times [2021-12-06 18:47:38,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:38,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630124251] [2021-12-06 18:47:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:38,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630124251] [2021-12-06 18:47:38,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630124251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:38,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439081144] [2021-12-06 18:47:38,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:38,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,312 INFO L87 Difference]: Start difference. First operand 839 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:38,402 INFO L93 Difference]: Finished difference Result 1332 states and 2008 transitions. [2021-12-06 18:47:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 18:47:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:38,409 INFO L225 Difference]: With dead ends: 1332 [2021-12-06 18:47:38,410 INFO L226 Difference]: Without dead ends: 1332 [2021-12-06 18:47:38,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,411 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 336 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:38,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1616 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-12-06 18:47:38,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1027. [2021-12-06 18:47:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 848 states have (on average 1.4375) internal successors, (1219), 849 states have internal predecessors, (1219), 122 states have call successors, (122), 47 states have call predecessors, (122), 56 states have return successors, (205), 130 states have call predecessors, (205), 115 states have call successors, (205) [2021-12-06 18:47:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1546 transitions. [2021-12-06 18:47:38,443 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1546 transitions. Word has length 21 [2021-12-06 18:47:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:38,443 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1546 transitions. [2021-12-06 18:47:38,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1546 transitions. [2021-12-06 18:47:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:47:38,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:38,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:38,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:47:38,445 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1853359414, now seen corresponding path program 1 times [2021-12-06 18:47:38,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085899592] [2021-12-06 18:47:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:38,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085899592] [2021-12-06 18:47:38,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085899592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:38,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982586931] [2021-12-06 18:47:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:38,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:38,507 INFO L87 Difference]: Start difference. First operand 1027 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:38,777 INFO L93 Difference]: Finished difference Result 1060 states and 1579 transitions. [2021-12-06 18:47:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:47:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 18:47:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:38,782 INFO L225 Difference]: With dead ends: 1060 [2021-12-06 18:47:38,782 INFO L226 Difference]: Without dead ends: 1060 [2021-12-06 18:47:38,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:38,783 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1040 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:38,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 851 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-12-06 18:47:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1009. [2021-12-06 18:47:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 833 states have (on average 1.4309723889555823) internal successors, (1192), 834 states have internal predecessors, (1192), 119 states have call successors, (119), 44 states have call predecessors, (119), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2021-12-06 18:47:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1510 transitions. [2021-12-06 18:47:38,809 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1510 transitions. Word has length 22 [2021-12-06 18:47:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:38,810 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1510 transitions. [2021-12-06 18:47:38,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1510 transitions. [2021-12-06 18:47:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 18:47:38,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:38,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:38,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:47:38,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash -401986613, now seen corresponding path program 1 times [2021-12-06 18:47:38,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982550469] [2021-12-06 18:47:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:38,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982550469] [2021-12-06 18:47:38,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982550469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:38,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566885783] [2021-12-06 18:47:38,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:38,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:38,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,837 INFO L87 Difference]: Start difference. First operand 1009 states and 1510 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:38,880 INFO L93 Difference]: Finished difference Result 1008 states and 1507 transitions. [2021-12-06 18:47:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 18:47:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:38,887 INFO L225 Difference]: With dead ends: 1008 [2021-12-06 18:47:38,887 INFO L226 Difference]: Without dead ends: 1008 [2021-12-06 18:47:38,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:38,888 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 22 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:38,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1248 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-12-06 18:47:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-12-06 18:47:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 833 states have (on average 1.4285714285714286) internal successors, (1190), 833 states have internal predecessors, (1190), 118 states have call successors, (118), 44 states have call predecessors, (118), 56 states have return successors, (199), 130 states have call predecessors, (199), 112 states have call successors, (199) [2021-12-06 18:47:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1507 transitions. [2021-12-06 18:47:38,921 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1507 transitions. Word has length 23 [2021-12-06 18:47:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:38,921 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1507 transitions. [2021-12-06 18:47:38,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1507 transitions. [2021-12-06 18:47:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:47:38,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:38,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:38,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:47:38,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -411805955, now seen corresponding path program 1 times [2021-12-06 18:47:38,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:38,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945487179] [2021-12-06 18:47:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:38,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:47:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:38,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:38,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945487179] [2021-12-06 18:47:38,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945487179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:38,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:38,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:38,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476968640] [2021-12-06 18:47:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:38,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:38,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:38,961 INFO L87 Difference]: Start difference. First operand 1008 states and 1507 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:39,142 INFO L93 Difference]: Finished difference Result 1305 states and 1930 transitions. [2021-12-06 18:47:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:47:39,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 18:47:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:39,154 INFO L225 Difference]: With dead ends: 1305 [2021-12-06 18:47:39,154 INFO L226 Difference]: Without dead ends: 1305 [2021-12-06 18:47:39,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:39,155 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 768 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:39,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 1392 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-12-06 18:47:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1065. [2021-12-06 18:47:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 881 states have (on average 1.41316685584563) internal successors, (1245), 886 states have internal predecessors, (1245), 115 states have call successors, (115), 49 states have call predecessors, (115), 68 states have return successors, (178), 129 states have call predecessors, (178), 109 states have call successors, (178) [2021-12-06 18:47:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1538 transitions. [2021-12-06 18:47:39,203 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1538 transitions. Word has length 36 [2021-12-06 18:47:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:39,203 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1538 transitions. [2021-12-06 18:47:39,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1538 transitions. [2021-12-06 18:47:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 18:47:39,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:39,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:39,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:47:39,206 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2014058946, now seen corresponding path program 1 times [2021-12-06 18:47:39,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:39,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498954752] [2021-12-06 18:47:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:39,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:47:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:39,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:39,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498954752] [2021-12-06 18:47:39,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498954752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:39,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:39,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:39,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415166808] [2021-12-06 18:47:39,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:39,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:39,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:39,244 INFO L87 Difference]: Start difference. First operand 1065 states and 1538 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:39,398 INFO L93 Difference]: Finished difference Result 836 states and 1213 transitions. [2021-12-06 18:47:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:47:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-06 18:47:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:39,402 INFO L225 Difference]: With dead ends: 836 [2021-12-06 18:47:39,402 INFO L226 Difference]: Without dead ends: 836 [2021-12-06 18:47:39,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:39,403 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 248 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:39,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1763 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-12-06 18:47:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 797. [2021-12-06 18:47:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 659 states have (on average 1.4142640364188164) internal successors, (932), 666 states have internal predecessors, (932), 93 states have call successors, (93), 33 states have call predecessors, (93), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2021-12-06 18:47:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1146 transitions. [2021-12-06 18:47:39,421 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1146 transitions. Word has length 35 [2021-12-06 18:47:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:39,421 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1146 transitions. [2021-12-06 18:47:39,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1146 transitions. [2021-12-06 18:47:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 18:47:39,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:39,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:39,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:47:39,423 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894196, now seen corresponding path program 1 times [2021-12-06 18:47:39,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697035378] [2021-12-06 18:47:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:39,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:39,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:39,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697035378] [2021-12-06 18:47:39,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697035378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:39,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:39,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:39,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102821444] [2021-12-06 18:47:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:39,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:39,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:39,452 INFO L87 Difference]: Start difference. First operand 797 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:39,627 INFO L93 Difference]: Finished difference Result 813 states and 1164 transitions. [2021-12-06 18:47:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:47:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 18:47:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:39,631 INFO L225 Difference]: With dead ends: 813 [2021-12-06 18:47:39,631 INFO L226 Difference]: Without dead ends: 813 [2021-12-06 18:47:39,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:39,632 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 690 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:39,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1099 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-12-06 18:47:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 797. [2021-12-06 18:47:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 659 states have (on average 1.4112291350531108) internal successors, (930), 666 states have internal predecessors, (930), 93 states have call successors, (93), 33 states have call predecessors, (93), 44 states have return successors, (121), 97 states have call predecessors, (121), 87 states have call successors, (121) [2021-12-06 18:47:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1144 transitions. [2021-12-06 18:47:39,649 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1144 transitions. Word has length 32 [2021-12-06 18:47:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:39,649 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1144 transitions. [2021-12-06 18:47:39,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1144 transitions. [2021-12-06 18:47:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:47:39,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:39,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:39,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:47:39,651 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash -509252101, now seen corresponding path program 1 times [2021-12-06 18:47:39,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:39,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279640337] [2021-12-06 18:47:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:39,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:39,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:39,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:39,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279640337] [2021-12-06 18:47:39,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279640337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:39,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:39,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:47:39,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771233239] [2021-12-06 18:47:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:39,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:47:39,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:47:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:39,703 INFO L87 Difference]: Start difference. First operand 797 states and 1144 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,054 INFO L93 Difference]: Finished difference Result 706 states and 1022 transitions. [2021-12-06 18:47:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:47:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 18:47:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,057 INFO L225 Difference]: With dead ends: 706 [2021-12-06 18:47:40,057 INFO L226 Difference]: Without dead ends: 706 [2021-12-06 18:47:40,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:40,058 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 843 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1645 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-12-06 18:47:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 665. [2021-12-06 18:47:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 548 states have (on average 1.4087591240875912) internal successors, (772), 554 states have internal predecessors, (772), 85 states have call successors, (85), 26 states have call predecessors, (85), 31 states have return successors, (96), 84 states have call predecessors, (96), 79 states have call successors, (96) [2021-12-06 18:47:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 953 transitions. [2021-12-06 18:47:40,073 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 953 transitions. Word has length 36 [2021-12-06 18:47:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,074 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 953 transitions. [2021-12-06 18:47:40,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:47:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 953 transitions. [2021-12-06 18:47:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:47:40,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:47:40,076 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash 138801863, now seen corresponding path program 1 times [2021-12-06 18:47:40,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043374752] [2021-12-06 18:47:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:40,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043374752] [2021-12-06 18:47:40,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043374752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:40,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:40,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:47:40,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215486123] [2021-12-06 18:47:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:40,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:47:40,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:47:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:40,100 INFO L87 Difference]: Start difference. First operand 665 states and 953 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,147 INFO L93 Difference]: Finished difference Result 811 states and 1155 transitions. [2021-12-06 18:47:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:47:40,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:47:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,151 INFO L225 Difference]: With dead ends: 811 [2021-12-06 18:47:40,151 INFO L226 Difference]: Without dead ends: 811 [2021-12-06 18:47:40,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:47:40,152 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 132 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1367 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-12-06 18:47:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 713. [2021-12-06 18:47:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 592 states have (on average 1.385135135135135) internal successors, (820), 591 states have internal predecessors, (820), 85 states have call successors, (85), 26 states have call predecessors, (85), 35 states have return successors, (107), 95 states have call predecessors, (107), 79 states have call successors, (107) [2021-12-06 18:47:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1012 transitions. [2021-12-06 18:47:40,168 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1012 transitions. Word has length 34 [2021-12-06 18:47:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,169 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1012 transitions. [2021-12-06 18:47:40,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1012 transitions. [2021-12-06 18:47:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:47:40,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:47:40,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash -298326267, now seen corresponding path program 1 times [2021-12-06 18:47:40,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079426513] [2021-12-06 18:47:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:40,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:40,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079426513] [2021-12-06 18:47:40,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079426513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:40,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:40,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:40,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110284113] [2021-12-06 18:47:40,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:40,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:40,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:40,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:40,210 INFO L87 Difference]: Start difference. First operand 713 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,386 INFO L93 Difference]: Finished difference Result 694 states and 982 transitions. [2021-12-06 18:47:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:47:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:47:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,390 INFO L225 Difference]: With dead ends: 694 [2021-12-06 18:47:40,390 INFO L226 Difference]: Without dead ends: 694 [2021-12-06 18:47:40,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:40,392 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 670 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 1099 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-12-06 18:47:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2021-12-06 18:47:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 575 states have (on average 1.3895652173913045) internal successors, (799), 581 states have internal predecessors, (799), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-06 18:47:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 982 transitions. [2021-12-06 18:47:40,412 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 982 transitions. Word has length 34 [2021-12-06 18:47:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,412 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 982 transitions. [2021-12-06 18:47:40,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 982 transitions. [2021-12-06 18:47:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 18:47:40,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:47:40,414 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash 452395465, now seen corresponding path program 1 times [2021-12-06 18:47:40,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836475256] [2021-12-06 18:47:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:40,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836475256] [2021-12-06 18:47:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836475256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:40,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:40,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698437161] [2021-12-06 18:47:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:40,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:40,461 INFO L87 Difference]: Start difference. First operand 694 states and 982 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,658 INFO L93 Difference]: Finished difference Result 788 states and 1120 transitions. [2021-12-06 18:47:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:47:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 18:47:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,662 INFO L225 Difference]: With dead ends: 788 [2021-12-06 18:47:40,662 INFO L226 Difference]: Without dead ends: 788 [2021-12-06 18:47:40,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:40,663 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 742 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 1192 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-12-06 18:47:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 696. [2021-12-06 18:47:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 577 states have (on average 1.3882149046793761) internal successors, (801), 583 states have internal predecessors, (801), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-06 18:47:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 984 transitions. [2021-12-06 18:47:40,676 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 984 transitions. Word has length 35 [2021-12-06 18:47:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,676 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 984 transitions. [2021-12-06 18:47:40,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 984 transitions. [2021-12-06 18:47:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 18:47:40,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:47:40,678 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash 452672295, now seen corresponding path program 1 times [2021-12-06 18:47:40,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976499683] [2021-12-06 18:47:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:40,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976499683] [2021-12-06 18:47:40,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976499683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:40,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:40,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:40,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813167731] [2021-12-06 18:47:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:40,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:40,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:40,708 INFO L87 Difference]: Start difference. First operand 696 states and 984 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,757 INFO L93 Difference]: Finished difference Result 706 states and 994 transitions. [2021-12-06 18:47:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:47:40,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-06 18:47:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,762 INFO L225 Difference]: With dead ends: 706 [2021-12-06 18:47:40,762 INFO L226 Difference]: Without dead ends: 679 [2021-12-06 18:47:40,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:40,763 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 38 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 3193 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:47:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-12-06 18:47:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2021-12-06 18:47:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 560 states have (on average 1.394642857142857) internal successors, (781), 566 states have internal predecessors, (781), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-06 18:47:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 964 transitions. [2021-12-06 18:47:40,781 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 964 transitions. Word has length 35 [2021-12-06 18:47:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 964 transitions. [2021-12-06 18:47:40,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:47:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 964 transitions. [2021-12-06 18:47:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:47:40,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:47:40,785 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1898283434, now seen corresponding path program 1 times [2021-12-06 18:47:40,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731132838] [2021-12-06 18:47:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:40,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:40,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731132838] [2021-12-06 18:47:40,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731132838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:40,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:40,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:47:40,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213726025] [2021-12-06 18:47:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:40,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:47:40,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:47:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:47:40,819 INFO L87 Difference]: Start difference. First operand 679 states and 964 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-06 18:47:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:40,975 INFO L93 Difference]: Finished difference Result 712 states and 1022 transitions. [2021-12-06 18:47:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:47:40,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) Word has length 37 [2021-12-06 18:47:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:40,978 INFO L225 Difference]: With dead ends: 712 [2021-12-06 18:47:40,978 INFO L226 Difference]: Without dead ends: 710 [2021-12-06 18:47:40,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:40,979 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 150 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:40,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1540 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-06 18:47:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 692. [2021-12-06 18:47:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 573 states have (on average 1.3891797556719023) internal successors, (796), 579 states have internal predecessors, (796), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-06 18:47:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 979 transitions. [2021-12-06 18:47:40,992 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 979 transitions. Word has length 37 [2021-12-06 18:47:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:40,992 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 979 transitions. [2021-12-06 18:47:40,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-12-06 18:47:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 979 transitions. [2021-12-06 18:47:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 18:47:40,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:40,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:40,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:47:40,994 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1374369595, now seen corresponding path program 1 times [2021-12-06 18:47:40,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:40,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216001540] [2021-12-06 18:47:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:40,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:41,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:41,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216001540] [2021-12-06 18:47:41,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216001540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:41,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:41,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:41,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742591990] [2021-12-06 18:47:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:41,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:41,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:41,053 INFO L87 Difference]: Start difference. First operand 692 states and 979 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-06 18:47:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:41,349 INFO L93 Difference]: Finished difference Result 710 states and 1019 transitions. [2021-12-06 18:47:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) Word has length 39 [2021-12-06 18:47:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:41,352 INFO L225 Difference]: With dead ends: 710 [2021-12-06 18:47:41,353 INFO L226 Difference]: Without dead ends: 710 [2021-12-06 18:47:41,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:41,353 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 745 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:41,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1870 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-06 18:47:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 692. [2021-12-06 18:47:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 573 states have (on average 1.387434554973822) internal successors, (795), 579 states have internal predecessors, (795), 85 states have call successors, (85), 26 states have call predecessors, (85), 33 states have return successors, (98), 86 states have call predecessors, (98), 79 states have call successors, (98) [2021-12-06 18:47:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 978 transitions. [2021-12-06 18:47:41,366 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 978 transitions. Word has length 39 [2021-12-06 18:47:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:41,366 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 978 transitions. [2021-12-06 18:47:41,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-12-06 18:47:41,366 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 978 transitions. [2021-12-06 18:47:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 18:47:41,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:41,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:41,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:47:41,368 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash -31152669, now seen corresponding path program 1 times [2021-12-06 18:47:41,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791995253] [2021-12-06 18:47:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:41,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:41,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:41,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791995253] [2021-12-06 18:47:41,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791995253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:41,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:41,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:41,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336482934] [2021-12-06 18:47:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:41,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:41,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:41,414 INFO L87 Difference]: Start difference. First operand 692 states and 978 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-12-06 18:47:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:41,648 INFO L93 Difference]: Finished difference Result 728 states and 1040 transitions. [2021-12-06 18:47:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) Word has length 40 [2021-12-06 18:47:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:41,653 INFO L225 Difference]: With dead ends: 728 [2021-12-06 18:47:41,653 INFO L226 Difference]: Without dead ends: 699 [2021-12-06 18:47:41,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:41,654 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 158 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3968 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:41,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 3968 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-06 18:47:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 683. [2021-12-06 18:47:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 566 states have (on average 1.3692579505300353) internal successors, (775), 572 states have internal predecessors, (775), 83 states have call successors, (83), 26 states have call predecessors, (83), 33 states have return successors, (96), 84 states have call predecessors, (96), 77 states have call successors, (96) [2021-12-06 18:47:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 954 transitions. [2021-12-06 18:47:41,675 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 954 transitions. Word has length 40 [2021-12-06 18:47:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:41,675 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 954 transitions. [2021-12-06 18:47:41,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 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) [2021-12-06 18:47:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 954 transitions. [2021-12-06 18:47:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:47:41,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:41,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:41,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:47:41,677 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 128291846, now seen corresponding path program 1 times [2021-12-06 18:47:41,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:41,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599851337] [2021-12-06 18:47:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:41,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:47:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:41,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:41,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599851337] [2021-12-06 18:47:41,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599851337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:41,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:41,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:47:41,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795468128] [2021-12-06 18:47:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:41,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:47:41,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:47:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:41,708 INFO L87 Difference]: Start difference. First operand 683 states and 954 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:41,946 INFO L93 Difference]: Finished difference Result 678 states and 964 transitions. [2021-12-06 18:47:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:41,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-06 18:47:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:41,949 INFO L225 Difference]: With dead ends: 678 [2021-12-06 18:47:41,949 INFO L226 Difference]: Without dead ends: 678 [2021-12-06 18:47:41,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:41,950 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 252 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:41,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1838 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-12-06 18:47:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 662. [2021-12-06 18:47:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 548 states have (on average 1.364963503649635) internal successors, (748), 553 states have internal predecessors, (748), 82 states have call successors, (82), 26 states have call predecessors, (82), 31 states have return successors, (94), 82 states have call predecessors, (94), 77 states have call successors, (94) [2021-12-06 18:47:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 924 transitions. [2021-12-06 18:47:41,965 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 924 transitions. Word has length 43 [2021-12-06 18:47:41,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:41,966 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 924 transitions. [2021-12-06 18:47:41,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 924 transitions. [2021-12-06 18:47:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 18:47:41,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:41,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:41,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:47:41,968 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash -37716100, now seen corresponding path program 1 times [2021-12-06 18:47:41,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:41,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959904223] [2021-12-06 18:47:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:41,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:47:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:42,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959904223] [2021-12-06 18:47:42,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959904223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:42,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:42,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:47:42,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813304045] [2021-12-06 18:47:42,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:42,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:47:42,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:47:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:42,040 INFO L87 Difference]: Start difference. First operand 662 states and 924 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:42,464 INFO L93 Difference]: Finished difference Result 689 states and 975 transitions. [2021-12-06 18:47:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:47:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2021-12-06 18:47:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:42,469 INFO L225 Difference]: With dead ends: 689 [2021-12-06 18:47:42,469 INFO L226 Difference]: Without dead ends: 676 [2021-12-06 18:47:42,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:42,470 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 98 mSDsluCounter, 3829 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:42,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4437 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-12-06 18:47:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 660. [2021-12-06 18:47:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 547 states have (on average 1.363802559414991) internal successors, (746), 552 states have internal predecessors, (746), 81 states have call successors, (81), 26 states have call predecessors, (81), 31 states have return successors, (93), 81 states have call predecessors, (93), 76 states have call successors, (93) [2021-12-06 18:47:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 920 transitions. [2021-12-06 18:47:42,487 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 920 transitions. Word has length 44 [2021-12-06 18:47:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:42,487 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 920 transitions. [2021-12-06 18:47:42,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 920 transitions. [2021-12-06 18:47:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:47:42,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:42,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:42,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:47:42,490 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1983772567, now seen corresponding path program 1 times [2021-12-06 18:47:42,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:42,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627850397] [2021-12-06 18:47:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:42,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:42,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627850397] [2021-12-06 18:47:42,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627850397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:42,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:42,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:47:42,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919486659] [2021-12-06 18:47:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:42,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:47:42,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:47:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:42,564 INFO L87 Difference]: Start difference. First operand 660 states and 920 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:42,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:42,981 INFO L93 Difference]: Finished difference Result 686 states and 970 transitions. [2021-12-06 18:47:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:47:42,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-06 18:47:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:42,984 INFO L225 Difference]: With dead ends: 686 [2021-12-06 18:47:42,984 INFO L226 Difference]: Without dead ends: 673 [2021-12-06 18:47:42,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:42,985 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 98 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:42,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4386 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-12-06 18:47:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 657. [2021-12-06 18:47:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 545 states have (on average 1.363302752293578) internal successors, (743), 550 states have internal predecessors, (743), 80 states have call successors, (80), 26 states have call predecessors, (80), 31 states have return successors, (92), 80 states have call predecessors, (92), 75 states have call successors, (92) [2021-12-06 18:47:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 915 transitions. [2021-12-06 18:47:42,996 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 915 transitions. Word has length 43 [2021-12-06 18:47:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:42,997 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 915 transitions. [2021-12-06 18:47:42,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 915 transitions. [2021-12-06 18:47:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:47:42,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:42,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:42,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 18:47:42,999 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 724634571, now seen corresponding path program 1 times [2021-12-06 18:47:42,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:42,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201177088] [2021-12-06 18:47:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:42,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:43,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:43,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201177088] [2021-12-06 18:47:43,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201177088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:43,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:43,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 18:47:43,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601641556] [2021-12-06 18:47:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:43,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:47:43,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:47:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:47:43,093 INFO L87 Difference]: Start difference. First operand 657 states and 915 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:43,520 INFO L93 Difference]: Finished difference Result 706 states and 990 transitions. [2021-12-06 18:47:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:47:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-12-06 18:47:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:43,523 INFO L225 Difference]: With dead ends: 706 [2021-12-06 18:47:43,523 INFO L226 Difference]: Without dead ends: 689 [2021-12-06 18:47:43,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:47:43,524 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 244 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:43,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 5476 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-12-06 18:47:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 655. [2021-12-06 18:47:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 544 states have (on average 1.3621323529411764) internal successors, (741), 549 states have internal predecessors, (741), 79 states have call successors, (79), 26 states have call predecessors, (79), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2021-12-06 18:47:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 911 transitions. [2021-12-06 18:47:43,536 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 911 transitions. Word has length 47 [2021-12-06 18:47:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:43,536 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 911 transitions. [2021-12-06 18:47:43,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 911 transitions. [2021-12-06 18:47:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 18:47:43,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:43,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:43,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 18:47:43,538 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1637865694, now seen corresponding path program 1 times [2021-12-06 18:47:43,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:43,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059743061] [2021-12-06 18:47:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:43,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:43,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:43,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059743061] [2021-12-06 18:47:43,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059743061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:43,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:43,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 18:47:43,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29664843] [2021-12-06 18:47:43,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:43,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:47:43,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:47:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:47:43,629 INFO L87 Difference]: Start difference. First operand 655 states and 911 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:44,068 INFO L93 Difference]: Finished difference Result 704 states and 986 transitions. [2021-12-06 18:47:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:47:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-06 18:47:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:44,071 INFO L225 Difference]: With dead ends: 704 [2021-12-06 18:47:44,071 INFO L226 Difference]: Without dead ends: 686 [2021-12-06 18:47:44,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:47:44,072 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 259 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:44,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 4944 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-06 18:47:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 654. [2021-12-06 18:47:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 543 states have (on average 1.3443830570902393) internal successors, (730), 548 states have internal predecessors, (730), 79 states have call successors, (79), 26 states have call predecessors, (79), 31 states have return successors, (91), 79 states have call predecessors, (91), 74 states have call successors, (91) [2021-12-06 18:47:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 900 transitions. [2021-12-06 18:47:44,084 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 900 transitions. Word has length 44 [2021-12-06 18:47:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 900 transitions. [2021-12-06 18:47:44,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 900 transitions. [2021-12-06 18:47:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 18:47:44,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:44,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:44,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 18:47:44,086 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1376070278, now seen corresponding path program 1 times [2021-12-06 18:47:44,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:44,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390167280] [2021-12-06 18:47:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:44,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:44,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:44,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390167280] [2021-12-06 18:47:44,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390167280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:44,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:44,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:44,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109265772] [2021-12-06 18:47:44,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:44,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:44,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:44,130 INFO L87 Difference]: Start difference. First operand 654 states and 900 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-12-06 18:47:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:44,324 INFO L93 Difference]: Finished difference Result 685 states and 955 transitions. [2021-12-06 18:47:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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) Word has length 44 [2021-12-06 18:47:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:44,328 INFO L225 Difference]: With dead ends: 685 [2021-12-06 18:47:44,328 INFO L226 Difference]: Without dead ends: 658 [2021-12-06 18:47:44,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:44,329 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 158 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:44,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 3672 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-12-06 18:47:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 642. [2021-12-06 18:47:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 534 states have (on average 1.3389513108614233) internal successors, (715), 539 states have internal predecessors, (715), 76 states have call successors, (76), 26 states have call predecessors, (76), 31 states have return successors, (88), 76 states have call predecessors, (88), 71 states have call successors, (88) [2021-12-06 18:47:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 879 transitions. [2021-12-06 18:47:44,344 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 879 transitions. Word has length 44 [2021-12-06 18:47:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:44,344 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 879 transitions. [2021-12-06 18:47:44,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-12-06 18:47:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 879 transitions. [2021-12-06 18:47:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:47:44,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:44,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:44,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 18:47:44,347 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash -766417177, now seen corresponding path program 1 times [2021-12-06 18:47:44,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:44,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24716680] [2021-12-06 18:47:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:44,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:44,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:44,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24716680] [2021-12-06 18:47:44,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24716680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:44,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:44,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:44,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423373063] [2021-12-06 18:47:44,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:44,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:44,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:44,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:44,383 INFO L87 Difference]: Start difference. First operand 642 states and 879 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:44,610 INFO L93 Difference]: Finished difference Result 693 states and 983 transitions. [2021-12-06 18:47:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:44,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-06 18:47:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:44,614 INFO L225 Difference]: With dead ends: 693 [2021-12-06 18:47:44,614 INFO L226 Difference]: Without dead ends: 693 [2021-12-06 18:47:44,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:44,615 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 134 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:44,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 2207 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-12-06 18:47:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 649. [2021-12-06 18:47:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 539 states have (on average 1.339517625231911) internal successors, (722), 545 states have internal predecessors, (722), 77 states have call successors, (77), 26 states have call predecessors, (77), 32 states have return successors, (95), 77 states have call predecessors, (95), 72 states have call successors, (95) [2021-12-06 18:47:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 894 transitions. [2021-12-06 18:47:44,635 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 894 transitions. Word has length 45 [2021-12-06 18:47:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:44,635 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 894 transitions. [2021-12-06 18:47:44,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 894 transitions. [2021-12-06 18:47:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:47:44,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:44,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:44,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 18:47:44,637 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1275890267, now seen corresponding path program 1 times [2021-12-06 18:47:44,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:44,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938590133] [2021-12-06 18:47:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:44,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:44,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:44,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938590133] [2021-12-06 18:47:44,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938590133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:44,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:44,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:47:44,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109240471] [2021-12-06 18:47:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:44,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:47:44,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:47:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:44,686 INFO L87 Difference]: Start difference. First operand 649 states and 894 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:44,921 INFO L93 Difference]: Finished difference Result 684 states and 959 transitions. [2021-12-06 18:47:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:47:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-06 18:47:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:44,925 INFO L225 Difference]: With dead ends: 684 [2021-12-06 18:47:44,926 INFO L226 Difference]: Without dead ends: 667 [2021-12-06 18:47:44,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:47:44,926 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 161 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:44,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 3839 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-06 18:47:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2021-12-06 18:47:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 538 states have (on average 1.338289962825279) internal successors, (720), 544 states have internal predecessors, (720), 76 states have call successors, (76), 26 states have call predecessors, (76), 32 states have return successors, (94), 76 states have call predecessors, (94), 71 states have call successors, (94) [2021-12-06 18:47:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 890 transitions. [2021-12-06 18:47:44,943 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 890 transitions. Word has length 45 [2021-12-06 18:47:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:44,943 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 890 transitions. [2021-12-06 18:47:44,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 890 transitions. [2021-12-06 18:47:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:47:44,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:44,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:44,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 18:47:44,946 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -499982008, now seen corresponding path program 1 times [2021-12-06 18:47:44,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:44,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325282917] [2021-12-06 18:47:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:44,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:44,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:44,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325282917] [2021-12-06 18:47:44,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325282917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:44,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:44,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:44,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935003849] [2021-12-06 18:47:44,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:44,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:44,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:44,994 INFO L87 Difference]: Start difference. First operand 647 states and 890 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-12-06 18:47:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:45,190 INFO L93 Difference]: Finished difference Result 691 states and 969 transitions. [2021-12-06 18:47:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) Word has length 45 [2021-12-06 18:47:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:45,193 INFO L225 Difference]: With dead ends: 691 [2021-12-06 18:47:45,193 INFO L226 Difference]: Without dead ends: 659 [2021-12-06 18:47:45,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:45,194 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 166 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:45,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 3523 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-06 18:47:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 639. [2021-12-06 18:47:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 532 states have (on average 1.330827067669173) internal successors, (708), 538 states have internal predecessors, (708), 74 states have call successors, (74), 26 states have call predecessors, (74), 32 states have return successors, (92), 74 states have call predecessors, (92), 69 states have call successors, (92) [2021-12-06 18:47:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 874 transitions. [2021-12-06 18:47:45,205 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 874 transitions. Word has length 45 [2021-12-06 18:47:45,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:45,206 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 874 transitions. [2021-12-06 18:47:45,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-12-06 18:47:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 874 transitions. [2021-12-06 18:47:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 18:47:45,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:45,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 18:47:45,207 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1469834137, now seen corresponding path program 1 times [2021-12-06 18:47:45,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29687994] [2021-12-06 18:47:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:45,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:45,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29687994] [2021-12-06 18:47:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29687994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:47:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330009511] [2021-12-06 18:47:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:45,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:47:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:47:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:45,307 INFO L87 Difference]: Start difference. First operand 639 states and 874 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:45,783 INFO L93 Difference]: Finished difference Result 671 states and 936 transitions. [2021-12-06 18:47:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:47:45,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-12-06 18:47:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:45,786 INFO L225 Difference]: With dead ends: 671 [2021-12-06 18:47:45,786 INFO L226 Difference]: Without dead ends: 656 [2021-12-06 18:47:45,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:45,787 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 110 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:45,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 4290 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-12-06 18:47:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 636. [2021-12-06 18:47:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 530 states have (on average 1.330188679245283) internal successors, (705), 536 states have internal predecessors, (705), 73 states have call successors, (73), 26 states have call predecessors, (73), 32 states have return successors, (91), 73 states have call predecessors, (91), 68 states have call successors, (91) [2021-12-06 18:47:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 869 transitions. [2021-12-06 18:47:45,798 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 869 transitions. Word has length 46 [2021-12-06 18:47:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:45,798 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 869 transitions. [2021-12-06 18:47:45,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 869 transitions. [2021-12-06 18:47:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 18:47:45,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:45,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:45,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 18:47:45,800 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1528127283, now seen corresponding path program 1 times [2021-12-06 18:47:45,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:45,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83887714] [2021-12-06 18:47:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:45,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 18:47:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:45,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:45,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83887714] [2021-12-06 18:47:45,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83887714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:45,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:45,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:45,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136471772] [2021-12-06 18:47:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:45,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:45,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:45,841 INFO L87 Difference]: Start difference. First operand 636 states and 869 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:46,034 INFO L93 Difference]: Finished difference Result 668 states and 950 transitions. [2021-12-06 18:47:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2021-12-06 18:47:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:46,037 INFO L225 Difference]: With dead ends: 668 [2021-12-06 18:47:46,037 INFO L226 Difference]: Without dead ends: 666 [2021-12-06 18:47:46,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:46,038 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 187 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:46,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 2339 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-06 18:47:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 640. [2021-12-06 18:47:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 532 states have (on average 1.3289473684210527) internal successors, (707), 540 states have internal predecessors, (707), 73 states have call successors, (73), 26 states have call predecessors, (73), 34 states have return successors, (107), 73 states have call predecessors, (107), 68 states have call successors, (107) [2021-12-06 18:47:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 887 transitions. [2021-12-06 18:47:46,049 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 887 transitions. Word has length 46 [2021-12-06 18:47:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:46,049 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 887 transitions. [2021-12-06 18:47:46,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 887 transitions. [2021-12-06 18:47:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:47:46,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:46,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:46,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 18:47:46,051 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash 43125576, now seen corresponding path program 1 times [2021-12-06 18:47:46,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:46,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348681804] [2021-12-06 18:47:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:46,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:46,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:46,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348681804] [2021-12-06 18:47:46,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348681804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:46,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:46,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:47:46,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037781] [2021-12-06 18:47:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:46,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:47:46,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:46,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:47:46,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:46,154 INFO L87 Difference]: Start difference. First operand 640 states and 887 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:46,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:46,653 INFO L93 Difference]: Finished difference Result 672 states and 949 transitions. [2021-12-06 18:47:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:47:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2021-12-06 18:47:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:46,656 INFO L225 Difference]: With dead ends: 672 [2021-12-06 18:47:46,656 INFO L226 Difference]: Without dead ends: 657 [2021-12-06 18:47:46,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:46,657 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 123 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:46,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 4660 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-06 18:47:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 637. [2021-12-06 18:47:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 530 states have (on average 1.3283018867924528) internal successors, (704), 538 states have internal predecessors, (704), 72 states have call successors, (72), 26 states have call predecessors, (72), 34 states have return successors, (106), 72 states have call predecessors, (106), 67 states have call successors, (106) [2021-12-06 18:47:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 882 transitions. [2021-12-06 18:47:46,667 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 882 transitions. Word has length 47 [2021-12-06 18:47:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:46,667 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 882 transitions. [2021-12-06 18:47:46,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 882 transitions. [2021-12-06 18:47:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:47:46,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:46,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:46,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 18:47:46,669 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 973189000, now seen corresponding path program 1 times [2021-12-06 18:47:46,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:46,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148620050] [2021-12-06 18:47:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:46,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:47:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:47:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:46,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148620050] [2021-12-06 18:47:46,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148620050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:46,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:46,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:47:46,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007367053] [2021-12-06 18:47:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:46,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:47:46,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:47:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:46,710 INFO L87 Difference]: Start difference. First operand 637 states and 882 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:47:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:46,968 INFO L93 Difference]: Finished difference Result 748 states and 1043 transitions. [2021-12-06 18:47:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-12-06 18:47:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:46,972 INFO L225 Difference]: With dead ends: 748 [2021-12-06 18:47:46,972 INFO L226 Difference]: Without dead ends: 748 [2021-12-06 18:47:46,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:46,972 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 241 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:46,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1661 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-12-06 18:47:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 701. [2021-12-06 18:47:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 584 states have (on average 1.327054794520548) internal successors, (775), 592 states have internal predecessors, (775), 75 states have call successors, (75), 30 states have call predecessors, (75), 41 states have return successors, (115), 78 states have call predecessors, (115), 71 states have call successors, (115) [2021-12-06 18:47:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 965 transitions. [2021-12-06 18:47:46,983 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 965 transitions. Word has length 50 [2021-12-06 18:47:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:46,984 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 965 transitions. [2021-12-06 18:47:46,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:47:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 965 transitions. [2021-12-06 18:47:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:47:46,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:46,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:46,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 18:47:46,985 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:46,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash -261050894, now seen corresponding path program 1 times [2021-12-06 18:47:46,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:46,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633401524] [2021-12-06 18:47:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:46,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:47,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:47,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633401524] [2021-12-06 18:47:47,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633401524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:47,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:47,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:47,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010776974] [2021-12-06 18:47:47,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:47,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:47,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:47,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:47,077 INFO L87 Difference]: Start difference. First operand 701 states and 965 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:47,586 INFO L93 Difference]: Finished difference Result 762 states and 1058 transitions. [2021-12-06 18:47:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:47,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-12-06 18:47:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:47,590 INFO L225 Difference]: With dead ends: 762 [2021-12-06 18:47:47,590 INFO L226 Difference]: Without dead ends: 745 [2021-12-06 18:47:47,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:47,590 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 248 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:47,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 4986 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-12-06 18:47:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 699. [2021-12-06 18:47:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 583 states have (on average 1.3259005145797598) internal successors, (773), 591 states have internal predecessors, (773), 74 states have call successors, (74), 30 states have call predecessors, (74), 41 states have return successors, (114), 77 states have call predecessors, (114), 70 states have call successors, (114) [2021-12-06 18:47:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 961 transitions. [2021-12-06 18:47:47,601 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 961 transitions. Word has length 52 [2021-12-06 18:47:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:47,601 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 961 transitions. [2021-12-06 18:47:47,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 961 transitions. [2021-12-06 18:47:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 18:47:47,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:47,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:47,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 18:47:47,603 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 721425391, now seen corresponding path program 1 times [2021-12-06 18:47:47,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:47,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508295378] [2021-12-06 18:47:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:47,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:47,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:47,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508295378] [2021-12-06 18:47:47,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508295378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:47,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:47,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:47,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963936201] [2021-12-06 18:47:47,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:47,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:47,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:47,695 INFO L87 Difference]: Start difference. First operand 699 states and 961 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:48,151 INFO L93 Difference]: Finished difference Result 760 states and 1054 transitions. [2021-12-06 18:47:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:48,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-12-06 18:47:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:48,154 INFO L225 Difference]: With dead ends: 760 [2021-12-06 18:47:48,154 INFO L226 Difference]: Without dead ends: 743 [2021-12-06 18:47:48,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:48,154 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 247 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:48,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 4958 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-12-06 18:47:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 697. [2021-12-06 18:47:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 582 states have (on average 1.324742268041237) internal successors, (771), 590 states have internal predecessors, (771), 73 states have call successors, (73), 30 states have call predecessors, (73), 41 states have return successors, (113), 76 states have call predecessors, (113), 69 states have call successors, (113) [2021-12-06 18:47:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 957 transitions. [2021-12-06 18:47:48,166 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 957 transitions. Word has length 51 [2021-12-06 18:47:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:48,166 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 957 transitions. [2021-12-06 18:47:48,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 957 transitions. [2021-12-06 18:47:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:47:48,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:48,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:48,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 18:47:48,168 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 618682838, now seen corresponding path program 1 times [2021-12-06 18:47:48,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:48,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248412474] [2021-12-06 18:47:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:48,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:48,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248412474] [2021-12-06 18:47:48,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248412474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:48,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:48,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 18:47:48,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026214835] [2021-12-06 18:47:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:48,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:47:48,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:47:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:47:48,258 INFO L87 Difference]: Start difference. First operand 697 states and 957 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:48,686 INFO L93 Difference]: Finished difference Result 742 states and 1033 transitions. [2021-12-06 18:47:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:47:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-06 18:47:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:48,688 INFO L225 Difference]: With dead ends: 742 [2021-12-06 18:47:48,688 INFO L226 Difference]: Without dead ends: 725 [2021-12-06 18:47:48,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:47:48,689 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 149 mSDsluCounter, 4434 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 4937 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:48,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 4937 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-06 18:47:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 695. [2021-12-06 18:47:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 581 states have (on average 1.3235800344234079) internal successors, (769), 589 states have internal predecessors, (769), 72 states have call successors, (72), 30 states have call predecessors, (72), 41 states have return successors, (112), 75 states have call predecessors, (112), 68 states have call successors, (112) [2021-12-06 18:47:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 953 transitions. [2021-12-06 18:47:48,699 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 953 transitions. Word has length 48 [2021-12-06 18:47:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:48,699 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 953 transitions. [2021-12-06 18:47:48,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 953 transitions. [2021-12-06 18:47:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:47:48,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:48,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:48,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 18:47:48,701 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1166693008, now seen corresponding path program 1 times [2021-12-06 18:47:48,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:48,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921567762] [2021-12-06 18:47:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:48,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:47:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:48,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:48,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921567762] [2021-12-06 18:47:48,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921567762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:48,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:48,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:47:48,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002236612] [2021-12-06 18:47:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:48,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:47:48,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:47:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:48,727 INFO L87 Difference]: Start difference. First operand 695 states and 953 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:48,866 INFO L93 Difference]: Finished difference Result 654 states and 878 transitions. [2021-12-06 18:47:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:47:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-12-06 18:47:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:48,869 INFO L225 Difference]: With dead ends: 654 [2021-12-06 18:47:48,869 INFO L226 Difference]: Without dead ends: 651 [2021-12-06 18:47:48,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:48,870 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 174 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:48,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1276 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-12-06 18:47:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 622. [2021-12-06 18:47:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 524 states have (on average 1.3187022900763359) internal successors, (691), 530 states have internal predecessors, (691), 63 states have call successors, (63), 27 states have call predecessors, (63), 34 states have return successors, (76), 64 states have call predecessors, (76), 59 states have call successors, (76) [2021-12-06 18:47:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 830 transitions. [2021-12-06 18:47:48,882 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 830 transitions. Word has length 48 [2021-12-06 18:47:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:48,882 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 830 transitions. [2021-12-06 18:47:48,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 830 transitions. [2021-12-06 18:47:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 18:47:48,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:48,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:48,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 18:47:48,885 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1152872609, now seen corresponding path program 1 times [2021-12-06 18:47:48,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:48,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642367811] [2021-12-06 18:47:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:48,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:47:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:49,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:49,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642367811] [2021-12-06 18:47:49,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642367811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:49,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:49,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:47:49,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471471148] [2021-12-06 18:47:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:49,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:47:49,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:47:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:49,016 INFO L87 Difference]: Start difference. First operand 622 states and 830 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:49,440 INFO L93 Difference]: Finished difference Result 647 states and 863 transitions. [2021-12-06 18:47:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:47:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-06 18:47:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:49,442 INFO L225 Difference]: With dead ends: 647 [2021-12-06 18:47:49,442 INFO L226 Difference]: Without dead ends: 632 [2021-12-06 18:47:49,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:49,443 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 116 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:49,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 4361 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-12-06 18:47:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 620. [2021-12-06 18:47:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 523 states have (on average 1.3173996175908222) internal successors, (689), 529 states have internal predecessors, (689), 62 states have call successors, (62), 27 states have call predecessors, (62), 34 states have return successors, (75), 63 states have call predecessors, (75), 58 states have call successors, (75) [2021-12-06 18:47:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 826 transitions. [2021-12-06 18:47:49,453 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 826 transitions. Word has length 57 [2021-12-06 18:47:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:49,453 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 826 transitions. [2021-12-06 18:47:49,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 826 transitions. [2021-12-06 18:47:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:47:49,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:49,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:49,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 18:47:49,455 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1985597816, now seen corresponding path program 1 times [2021-12-06 18:47:49,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70565397] [2021-12-06 18:47:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:49,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:47:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:49,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:49,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70565397] [2021-12-06 18:47:49,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70565397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:49,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:49,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:47:49,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128990034] [2021-12-06 18:47:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:49,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:47:49,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:47:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:49,554 INFO L87 Difference]: Start difference. First operand 620 states and 826 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:49,977 INFO L93 Difference]: Finished difference Result 644 states and 858 transitions. [2021-12-06 18:47:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:47:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-06 18:47:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:49,979 INFO L225 Difference]: With dead ends: 644 [2021-12-06 18:47:49,979 INFO L226 Difference]: Without dead ends: 629 [2021-12-06 18:47:49,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:49,980 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 116 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:49,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 4306 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-12-06 18:47:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 617. [2021-12-06 18:47:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 521 states have (on average 1.3166986564299423) internal successors, (686), 527 states have internal predecessors, (686), 61 states have call successors, (61), 27 states have call predecessors, (61), 34 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2021-12-06 18:47:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 821 transitions. [2021-12-06 18:47:49,986 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 821 transitions. Word has length 48 [2021-12-06 18:47:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:49,987 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 821 transitions. [2021-12-06 18:47:49,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 821 transitions. [2021-12-06 18:47:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 18:47:49,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:49,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:49,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 18:47:49,988 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1806708367, now seen corresponding path program 1 times [2021-12-06 18:47:49,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:49,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537923572] [2021-12-06 18:47:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:49,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:47:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:47:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:50,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:50,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537923572] [2021-12-06 18:47:50,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537923572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:50,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:50,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:50,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341008941] [2021-12-06 18:47:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:50,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:50,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:50,033 INFO L87 Difference]: Start difference. First operand 617 states and 821 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:50,255 INFO L93 Difference]: Finished difference Result 694 states and 917 transitions. [2021-12-06 18:47:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-06 18:47:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:50,257 INFO L225 Difference]: With dead ends: 694 [2021-12-06 18:47:50,257 INFO L226 Difference]: Without dead ends: 694 [2021-12-06 18:47:50,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:50,258 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 334 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:50,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2114 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-12-06 18:47:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 623. [2021-12-06 18:47:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 526 states have (on average 1.3155893536121672) internal successors, (692), 532 states have internal predecessors, (692), 62 states have call successors, (62), 27 states have call predecessors, (62), 34 states have return successors, (75), 63 states have call predecessors, (75), 58 states have call successors, (75) [2021-12-06 18:47:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 829 transitions. [2021-12-06 18:47:50,265 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 829 transitions. Word has length 50 [2021-12-06 18:47:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:50,265 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 829 transitions. [2021-12-06 18:47:50,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 829 transitions. [2021-12-06 18:47:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 18:47:50,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:50,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:50,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 18:47:50,267 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1801199632, now seen corresponding path program 1 times [2021-12-06 18:47:50,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726051400] [2021-12-06 18:47:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:50,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:47:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:50,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:50,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726051400] [2021-12-06 18:47:50,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726051400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:50,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:50,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:47:50,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129398773] [2021-12-06 18:47:50,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:50,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:47:50,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:47:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:50,315 INFO L87 Difference]: Start difference. First operand 623 states and 829 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 18:47:50,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:50,531 INFO L93 Difference]: Finished difference Result 635 states and 847 transitions. [2021-12-06 18:47:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:47:50,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2021-12-06 18:47:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:50,533 INFO L225 Difference]: With dead ends: 635 [2021-12-06 18:47:50,533 INFO L226 Difference]: Without dead ends: 635 [2021-12-06 18:47:50,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:47:50,534 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 197 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:50,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1485 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-12-06 18:47:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 623. [2021-12-06 18:47:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 526 states have (on average 1.311787072243346) internal successors, (690), 532 states have internal predecessors, (690), 62 states have call successors, (62), 27 states have call predecessors, (62), 34 states have return successors, (75), 63 states have call predecessors, (75), 58 states have call successors, (75) [2021-12-06 18:47:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 827 transitions. [2021-12-06 18:47:50,545 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 827 transitions. Word has length 53 [2021-12-06 18:47:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:50,545 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 827 transitions. [2021-12-06 18:47:50,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 18:47:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 827 transitions. [2021-12-06 18:47:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 18:47:50,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:50,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:50,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 18:47:50,547 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:50,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1698213256, now seen corresponding path program 1 times [2021-12-06 18:47:50,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:50,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790696862] [2021-12-06 18:47:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:50,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:47:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:47:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:50,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:50,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790696862] [2021-12-06 18:47:50,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790696862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:50,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:50,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:47:50,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363064495] [2021-12-06 18:47:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:50,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:47:50,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:47:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:47:50,602 INFO L87 Difference]: Start difference. First operand 623 states and 827 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:50,850 INFO L93 Difference]: Finished difference Result 666 states and 884 transitions. [2021-12-06 18:47:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:47:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-12-06 18:47:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:50,851 INFO L225 Difference]: With dead ends: 666 [2021-12-06 18:47:50,851 INFO L226 Difference]: Without dead ends: 615 [2021-12-06 18:47:50,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:47:50,852 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 185 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:50,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 3175 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-12-06 18:47:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 596. [2021-12-06 18:47:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 504 states have (on average 1.2976190476190477) internal successors, (654), 510 states have internal predecessors, (654), 57 states have call successors, (57), 27 states have call predecessors, (57), 34 states have return successors, (69), 58 states have call predecessors, (69), 53 states have call successors, (69) [2021-12-06 18:47:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 780 transitions. [2021-12-06 18:47:50,859 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 780 transitions. Word has length 51 [2021-12-06 18:47:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:50,859 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 780 transitions. [2021-12-06 18:47:50,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 780 transitions. [2021-12-06 18:47:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 18:47:50,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:50,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:50,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 18:47:50,864 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 673526006, now seen corresponding path program 1 times [2021-12-06 18:47:50,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:50,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991178154] [2021-12-06 18:47:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:50,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 18:47:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:47:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:50,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:50,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991178154] [2021-12-06 18:47:50,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991178154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:50,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:50,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:50,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299962398] [2021-12-06 18:47:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:50,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:50,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:50,900 INFO L87 Difference]: Start difference. First operand 596 states and 780 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:51,055 INFO L93 Difference]: Finished difference Result 602 states and 788 transitions. [2021-12-06 18:47:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:51,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-12-06 18:47:51,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:51,057 INFO L225 Difference]: With dead ends: 602 [2021-12-06 18:47:51,057 INFO L226 Difference]: Without dead ends: 602 [2021-12-06 18:47:51,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:51,057 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 98 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:51,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 2087 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-06 18:47:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 586. [2021-12-06 18:47:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 502 states have internal predecessors, (642), 55 states have call successors, (55), 27 states have call predecessors, (55), 34 states have return successors, (67), 56 states have call predecessors, (67), 51 states have call successors, (67) [2021-12-06 18:47:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 764 transitions. [2021-12-06 18:47:51,065 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 764 transitions. Word has length 51 [2021-12-06 18:47:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:51,065 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 764 transitions. [2021-12-06 18:47:51,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 764 transitions. [2021-12-06 18:47:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:47:51,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:51,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:51,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 18:47:51,067 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1072773224, now seen corresponding path program 1 times [2021-12-06 18:47:51,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:51,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580804089] [2021-12-06 18:47:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:51,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 18:47:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:51,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:51,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580804089] [2021-12-06 18:47:51,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580804089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:51,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:51,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:51,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397007767] [2021-12-06 18:47:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:51,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:51,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:51,104 INFO L87 Difference]: Start difference. First operand 586 states and 764 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:51,261 INFO L93 Difference]: Finished difference Result 598 states and 782 transitions. [2021-12-06 18:47:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-12-06 18:47:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:51,263 INFO L225 Difference]: With dead ends: 598 [2021-12-06 18:47:51,263 INFO L226 Difference]: Without dead ends: 593 [2021-12-06 18:47:51,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:51,263 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 171 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:51,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 1833 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-12-06 18:47:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 581. [2021-12-06 18:47:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 492 states have (on average 1.2947154471544715) internal successors, (637), 498 states have internal predecessors, (637), 54 states have call successors, (54), 27 states have call predecessors, (54), 34 states have return successors, (66), 55 states have call predecessors, (66), 50 states have call successors, (66) [2021-12-06 18:47:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 757 transitions. [2021-12-06 18:47:51,270 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 757 transitions. Word has length 52 [2021-12-06 18:47:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:51,270 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 757 transitions. [2021-12-06 18:47:51,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 757 transitions. [2021-12-06 18:47:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:47:51,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:51,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 18:47:51,271 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1299527003, now seen corresponding path program 1 times [2021-12-06 18:47:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566396860] [2021-12-06 18:47:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:51,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:51,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566396860] [2021-12-06 18:47:51,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566396860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:51,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:51,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:47:51,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702765693] [2021-12-06 18:47:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:51,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:47:51,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:47:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:47:51,309 INFO L87 Difference]: Start difference. First operand 581 states and 757 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:51,507 INFO L93 Difference]: Finished difference Result 690 states and 901 transitions. [2021-12-06 18:47:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2021-12-06 18:47:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:51,509 INFO L225 Difference]: With dead ends: 690 [2021-12-06 18:47:51,509 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 18:47:51,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:51,510 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 215 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:51,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 1369 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 18:47:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 609. [2021-12-06 18:47:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 518 states have (on average 1.2895752895752897) internal successors, (668), 524 states have internal predecessors, (668), 54 states have call successors, (54), 27 states have call predecessors, (54), 36 states have return successors, (68), 57 states have call predecessors, (68), 50 states have call successors, (68) [2021-12-06 18:47:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 790 transitions. [2021-12-06 18:47:51,520 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 790 transitions. Word has length 52 [2021-12-06 18:47:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:51,521 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 790 transitions. [2021-12-06 18:47:51,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 790 transitions. [2021-12-06 18:47:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 18:47:51,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:51,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:51,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-06 18:47:51,523 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2075413267, now seen corresponding path program 1 times [2021-12-06 18:47:51,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:51,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818845238] [2021-12-06 18:47:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:51,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:51,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:51,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818845238] [2021-12-06 18:47:51,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818845238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:51,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:51,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:51,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787954735] [2021-12-06 18:47:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:51,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:51,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:51,567 INFO L87 Difference]: Start difference. First operand 609 states and 790 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:51,914 INFO L93 Difference]: Finished difference Result 688 states and 898 transitions. [2021-12-06 18:47:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:47:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2021-12-06 18:47:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:51,915 INFO L225 Difference]: With dead ends: 688 [2021-12-06 18:47:51,915 INFO L226 Difference]: Without dead ends: 688 [2021-12-06 18:47:51,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:51,916 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 785 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:51,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 1309 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-12-06 18:47:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 609. [2021-12-06 18:47:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 518 states have (on average 1.2876447876447876) internal successors, (667), 524 states have internal predecessors, (667), 54 states have call successors, (54), 27 states have call predecessors, (54), 36 states have return successors, (68), 57 states have call predecessors, (68), 50 states have call successors, (68) [2021-12-06 18:47:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 789 transitions. [2021-12-06 18:47:51,922 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 789 transitions. Word has length 53 [2021-12-06 18:47:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:51,922 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 789 transitions. [2021-12-06 18:47:51,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 789 transitions. [2021-12-06 18:47:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 18:47:51,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:51,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:51,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 18:47:51,924 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 726957118, now seen corresponding path program 1 times [2021-12-06 18:47:51,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:51,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042232629] [2021-12-06 18:47:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:51,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 18:47:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:52,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:52,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042232629] [2021-12-06 18:47:52,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042232629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:52,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:52,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:52,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505988528] [2021-12-06 18:47:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:52,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:52,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:52,016 INFO L87 Difference]: Start difference. First operand 609 states and 789 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:52,417 INFO L93 Difference]: Finished difference Result 661 states and 854 transitions. [2021-12-06 18:47:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:52,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2021-12-06 18:47:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:52,418 INFO L225 Difference]: With dead ends: 661 [2021-12-06 18:47:52,419 INFO L226 Difference]: Without dead ends: 644 [2021-12-06 18:47:52,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:52,419 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 278 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:52,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 3785 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-12-06 18:47:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 607. [2021-12-06 18:47:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 517 states have (on average 1.2862669245647969) internal successors, (665), 523 states have internal predecessors, (665), 53 states have call successors, (53), 27 states have call predecessors, (53), 36 states have return successors, (67), 56 states have call predecessors, (67), 49 states have call successors, (67) [2021-12-06 18:47:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 785 transitions. [2021-12-06 18:47:52,428 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 785 transitions. Word has length 59 [2021-12-06 18:47:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:52,428 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 785 transitions. [2021-12-06 18:47:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 10 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 785 transitions. [2021-12-06 18:47:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 18:47:52,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:52,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:52,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 18:47:52,429 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2135115312, now seen corresponding path program 1 times [2021-12-06 18:47:52,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:52,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881988933] [2021-12-06 18:47:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:52,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:47:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:52,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:52,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881988933] [2021-12-06 18:47:52,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881988933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:52,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:52,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 18:47:52,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822380886] [2021-12-06 18:47:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:52,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:47:52,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:47:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:52,541 INFO L87 Difference]: Start difference. First operand 607 states and 785 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:52,988 INFO L93 Difference]: Finished difference Result 636 states and 822 transitions. [2021-12-06 18:47:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:47:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2021-12-06 18:47:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:52,989 INFO L225 Difference]: With dead ends: 636 [2021-12-06 18:47:52,989 INFO L226 Difference]: Without dead ends: 616 [2021-12-06 18:47:52,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-12-06 18:47:52,990 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 325 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4440 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:52,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 4440 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-06 18:47:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 604. [2021-12-06 18:47:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 515 states have (on average 1.2854368932038835) internal successors, (662), 521 states have internal predecessors, (662), 52 states have call successors, (52), 27 states have call predecessors, (52), 36 states have return successors, (66), 55 states have call predecessors, (66), 48 states have call successors, (66) [2021-12-06 18:47:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 780 transitions. [2021-12-06 18:47:52,996 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 780 transitions. Word has length 55 [2021-12-06 18:47:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 780 transitions. [2021-12-06 18:47:52,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 780 transitions. [2021-12-06 18:47:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:47:52,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:52,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:52,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 18:47:52,998 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -250939957, now seen corresponding path program 1 times [2021-12-06 18:47:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625642384] [2021-12-06 18:47:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:52,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:53,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:53,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625642384] [2021-12-06 18:47:53,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625642384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:53,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:53,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:47:53,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719842830] [2021-12-06 18:47:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:53,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:47:53,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:47:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:53,090 INFO L87 Difference]: Start difference. First operand 604 states and 780 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:53,476 INFO L93 Difference]: Finished difference Result 628 states and 811 transitions. [2021-12-06 18:47:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:47:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-06 18:47:53,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:53,477 INFO L225 Difference]: With dead ends: 628 [2021-12-06 18:47:53,477 INFO L226 Difference]: Without dead ends: 606 [2021-12-06 18:47:53,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:53,478 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 116 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:53,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 3540 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-06 18:47:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 594. [2021-12-06 18:47:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 507 states have (on average 1.2859960552268244) internal successors, (652), 513 states have internal predecessors, (652), 50 states have call successors, (50), 27 states have call predecessors, (50), 36 states have return successors, (64), 53 states have call predecessors, (64), 46 states have call successors, (64) [2021-12-06 18:47:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 766 transitions. [2021-12-06 18:47:53,484 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 766 transitions. Word has length 54 [2021-12-06 18:47:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 766 transitions. [2021-12-06 18:47:53,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 766 transitions. [2021-12-06 18:47:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:47:53,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:53,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:53,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-06 18:47:53,485 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 538585810, now seen corresponding path program 1 times [2021-12-06 18:47:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:53,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485981055] [2021-12-06 18:47:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:53,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:47:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:53,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:53,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485981055] [2021-12-06 18:47:53,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485981055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:53,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:53,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:53,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352821481] [2021-12-06 18:47:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:53,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:53,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:53,521 INFO L87 Difference]: Start difference. First operand 594 states and 766 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:53,662 INFO L93 Difference]: Finished difference Result 606 states and 783 transitions. [2021-12-06 18:47:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:53,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-06 18:47:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:53,663 INFO L225 Difference]: With dead ends: 606 [2021-12-06 18:47:53,663 INFO L226 Difference]: Without dead ends: 601 [2021-12-06 18:47:53,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:53,663 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 94 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:53,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1939 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-12-06 18:47:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 589. [2021-12-06 18:47:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 503 states have (on average 1.286282306163022) internal successors, (647), 509 states have internal predecessors, (647), 49 states have call successors, (49), 27 states have call predecessors, (49), 36 states have return successors, (63), 52 states have call predecessors, (63), 45 states have call successors, (63) [2021-12-06 18:47:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 759 transitions. [2021-12-06 18:47:53,672 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 759 transitions. Word has length 54 [2021-12-06 18:47:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:53,672 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 759 transitions. [2021-12-06 18:47:53,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 759 transitions. [2021-12-06 18:47:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:47:53,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:53,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:53,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-06 18:47:53,674 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1724995102, now seen corresponding path program 1 times [2021-12-06 18:47:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661011931] [2021-12-06 18:47:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:53,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:47:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:53,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:53,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661011931] [2021-12-06 18:47:53,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661011931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:53,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:53,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:47:53,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801005450] [2021-12-06 18:47:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:53,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:47:53,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:47:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:53,730 INFO L87 Difference]: Start difference. First operand 589 states and 759 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:53,980 INFO L93 Difference]: Finished difference Result 621 states and 799 transitions. [2021-12-06 18:47:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:47:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-06 18:47:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:53,981 INFO L225 Difference]: With dead ends: 621 [2021-12-06 18:47:53,981 INFO L226 Difference]: Without dead ends: 598 [2021-12-06 18:47:53,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:47:53,982 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 232 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:53,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 3126 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-06 18:47:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 586. [2021-12-06 18:47:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 501 states have (on average 1.2854291417165669) internal successors, (644), 507 states have internal predecessors, (644), 48 states have call successors, (48), 27 states have call predecessors, (48), 36 states have return successors, (62), 51 states have call predecessors, (62), 44 states have call successors, (62) [2021-12-06 18:47:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 754 transitions. [2021-12-06 18:47:53,988 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 754 transitions. Word has length 54 [2021-12-06 18:47:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:53,988 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 754 transitions. [2021-12-06 18:47:53,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 754 transitions. [2021-12-06 18:47:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:47:53,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:53,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:53,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 18:47:53,989 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -726384384, now seen corresponding path program 1 times [2021-12-06 18:47:53,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:53,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054027832] [2021-12-06 18:47:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:53,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:54,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:54,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054027832] [2021-12-06 18:47:54,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054027832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:54,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:54,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:54,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267826589] [2021-12-06 18:47:54,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:54,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:54,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:54,033 INFO L87 Difference]: Start difference. First operand 586 states and 754 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:54,351 INFO L93 Difference]: Finished difference Result 665 states and 860 transitions. [2021-12-06 18:47:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:47:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-06 18:47:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:54,353 INFO L225 Difference]: With dead ends: 665 [2021-12-06 18:47:54,353 INFO L226 Difference]: Without dead ends: 665 [2021-12-06 18:47:54,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:54,353 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 688 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:54,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1442 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-12-06 18:47:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 584. [2021-12-06 18:47:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 499 states have (on average 1.2845691382765532) internal successors, (641), 505 states have internal predecessors, (641), 48 states have call successors, (48), 27 states have call predecessors, (48), 36 states have return successors, (62), 51 states have call predecessors, (62), 44 states have call successors, (62) [2021-12-06 18:47:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 751 transitions. [2021-12-06 18:47:54,360 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 751 transitions. Word has length 54 [2021-12-06 18:47:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:54,360 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 751 transitions. [2021-12-06 18:47:54,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 751 transitions. [2021-12-06 18:47:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 18:47:54,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:54,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:54,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-06 18:47:54,361 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -726107554, now seen corresponding path program 1 times [2021-12-06 18:47:54,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:54,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788489114] [2021-12-06 18:47:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:54,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:54,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:54,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788489114] [2021-12-06 18:47:54,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788489114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:54,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:54,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:47:54,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353620357] [2021-12-06 18:47:54,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:54,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:47:54,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:47:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:54,432 INFO L87 Difference]: Start difference. First operand 584 states and 751 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:54,823 INFO L93 Difference]: Finished difference Result 603 states and 775 transitions. [2021-12-06 18:47:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:47:54,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-06 18:47:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:54,825 INFO L225 Difference]: With dead ends: 603 [2021-12-06 18:47:54,825 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 18:47:54,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:47:54,825 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 211 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:54,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2757 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 18:47:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-12-06 18:47:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 459 states have (on average 1.2745098039215685) internal successors, (585), 465 states have internal predecessors, (585), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (60), 49 states have call predecessors, (60), 44 states have call successors, (60) [2021-12-06 18:47:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 693 transitions. [2021-12-06 18:47:54,831 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 693 transitions. Word has length 54 [2021-12-06 18:47:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:54,831 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 693 transitions. [2021-12-06 18:47:54,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:47:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 693 transitions. [2021-12-06 18:47:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 18:47:54,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:54,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:54,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-06 18:47:54,832 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1795419470, now seen corresponding path program 1 times [2021-12-06 18:47:54,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324074062] [2021-12-06 18:47:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:54,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:47:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:54,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324074062] [2021-12-06 18:47:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324074062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:54,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:54,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:54,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856999197] [2021-12-06 18:47:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:54,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:54,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:54,877 INFO L87 Difference]: Start difference. First operand 542 states and 693 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:55,126 INFO L93 Difference]: Finished difference Result 572 states and 730 transitions. [2021-12-06 18:47:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:55,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2021-12-06 18:47:55,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:55,127 INFO L225 Difference]: With dead ends: 572 [2021-12-06 18:47:55,127 INFO L226 Difference]: Without dead ends: 572 [2021-12-06 18:47:55,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:55,128 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 177 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:55,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 2072 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-06 18:47:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2021-12-06 18:47:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 459 states have (on average 1.2723311546840959) internal successors, (584), 465 states have internal predecessors, (584), 48 states have call successors, (48), 27 states have call predecessors, (48), 34 states have return successors, (60), 49 states have call predecessors, (60), 44 states have call successors, (60) [2021-12-06 18:47:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 692 transitions. [2021-12-06 18:47:55,134 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 692 transitions. Word has length 56 [2021-12-06 18:47:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:55,134 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 692 transitions. [2021-12-06 18:47:55,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 692 transitions. [2021-12-06 18:47:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 18:47:55,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:55,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:55,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-06 18:47:55,135 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1818051724, now seen corresponding path program 1 times [2021-12-06 18:47:55,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796705842] [2021-12-06 18:47:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:55,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:47:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:55,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:55,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796705842] [2021-12-06 18:47:55,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796705842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:55,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:55,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:55,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006620937] [2021-12-06 18:47:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:55,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:55,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:55,222 INFO L87 Difference]: Start difference. First operand 542 states and 692 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:55,601 INFO L93 Difference]: Finished difference Result 594 states and 756 transitions. [2021-12-06 18:47:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2021-12-06 18:47:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:55,602 INFO L225 Difference]: With dead ends: 594 [2021-12-06 18:47:55,602 INFO L226 Difference]: Without dead ends: 567 [2021-12-06 18:47:55,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:55,603 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 249 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:55,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 3668 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-06 18:47:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 537. [2021-12-06 18:47:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 455 states have (on average 1.268131868131868) internal successors, (577), 461 states have internal predecessors, (577), 47 states have call successors, (47), 27 states have call predecessors, (47), 34 states have return successors, (58), 48 states have call predecessors, (58), 43 states have call successors, (58) [2021-12-06 18:47:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 682 transitions. [2021-12-06 18:47:55,611 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 682 transitions. Word has length 56 [2021-12-06 18:47:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:55,611 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 682 transitions. [2021-12-06 18:47:55,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 682 transitions. [2021-12-06 18:47:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 18:47:55,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:55,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:55,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-06 18:47:55,612 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash -356987344, now seen corresponding path program 1 times [2021-12-06 18:47:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329999898] [2021-12-06 18:47:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:55,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:47:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:55,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:55,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329999898] [2021-12-06 18:47:55,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329999898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:55,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:55,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377445928] [2021-12-06 18:47:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:55,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:55,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:55,664 INFO L87 Difference]: Start difference. First operand 537 states and 682 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:55,944 INFO L93 Difference]: Finished difference Result 549 states and 699 transitions. [2021-12-06 18:47:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2021-12-06 18:47:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:55,946 INFO L225 Difference]: With dead ends: 549 [2021-12-06 18:47:55,946 INFO L226 Difference]: Without dead ends: 543 [2021-12-06 18:47:55,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:55,946 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 159 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:55,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1920 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-12-06 18:47:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2021-12-06 18:47:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 450 states have (on average 1.268888888888889) internal successors, (571), 456 states have internal predecessors, (571), 46 states have call successors, (46), 27 states have call predecessors, (46), 34 states have return successors, (57), 47 states have call predecessors, (57), 42 states have call successors, (57) [2021-12-06 18:47:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 674 transitions. [2021-12-06 18:47:55,955 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 674 transitions. Word has length 56 [2021-12-06 18:47:55,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:55,955 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 674 transitions. [2021-12-06 18:47:55,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 674 transitions. [2021-12-06 18:47:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:47:55,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:55,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:55,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-06 18:47:55,957 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1208974705, now seen corresponding path program 1 times [2021-12-06 18:47:55,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935222328] [2021-12-06 18:47:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:55,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:47:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:47:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:55,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:55,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935222328] [2021-12-06 18:47:55,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935222328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:55,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:55,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:55,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217624162] [2021-12-06 18:47:55,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:55,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:55,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:55,998 INFO L87 Difference]: Start difference. First operand 531 states and 674 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:56,194 INFO L93 Difference]: Finished difference Result 542 states and 689 transitions. [2021-12-06 18:47:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2021-12-06 18:47:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:56,195 INFO L225 Difference]: With dead ends: 542 [2021-12-06 18:47:56,195 INFO L226 Difference]: Without dead ends: 531 [2021-12-06 18:47:56,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:56,196 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 176 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:56,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 1666 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-12-06 18:47:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 519. [2021-12-06 18:47:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 439 states have (on average 1.2642369020501139) internal successors, (555), 445 states have internal predecessors, (555), 45 states have call successors, (45), 27 states have call predecessors, (45), 34 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2021-12-06 18:47:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 656 transitions. [2021-12-06 18:47:56,201 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 656 transitions. Word has length 58 [2021-12-06 18:47:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:56,202 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 656 transitions. [2021-12-06 18:47:56,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 656 transitions. [2021-12-06 18:47:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:47:56,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:56,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:56,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-06 18:47:56,203 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:56,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1375988349, now seen corresponding path program 1 times [2021-12-06 18:47:56,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:56,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010346612] [2021-12-06 18:47:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:56,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:56,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:56,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010346612] [2021-12-06 18:47:56,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010346612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:56,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:56,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:47:56,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860090184] [2021-12-06 18:47:56,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:56,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:47:56,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:47:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:47:56,301 INFO L87 Difference]: Start difference. First operand 519 states and 656 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:57,125 INFO L93 Difference]: Finished difference Result 969 states and 1231 transitions. [2021-12-06 18:47:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:47:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-06 18:47:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:57,127 INFO L225 Difference]: With dead ends: 969 [2021-12-06 18:47:57,127 INFO L226 Difference]: Without dead ends: 940 [2021-12-06 18:47:57,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 18:47:57,127 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 713 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:57,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2672 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 18:47:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-12-06 18:47:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 716. [2021-12-06 18:47:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 601 states have (on average 1.276206322795341) internal successors, (767), 614 states have internal predecessors, (767), 63 states have call successors, (63), 40 states have call predecessors, (63), 51 states have return successors, (82), 61 states have call predecessors, (82), 59 states have call successors, (82) [2021-12-06 18:47:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 912 transitions. [2021-12-06 18:47:57,139 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 912 transitions. Word has length 58 [2021-12-06 18:47:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:57,139 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 912 transitions. [2021-12-06 18:47:57,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 912 transitions. [2021-12-06 18:47:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:47:57,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:57,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:57,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-06 18:47:57,141 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2042959941, now seen corresponding path program 1 times [2021-12-06 18:47:57,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:57,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938563759] [2021-12-06 18:47:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:57,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:57,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938563759] [2021-12-06 18:47:57,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938563759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:57,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:57,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:57,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997914453] [2021-12-06 18:47:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:57,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:57,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:57,179 INFO L87 Difference]: Start difference. First operand 716 states and 912 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:57,501 INFO L93 Difference]: Finished difference Result 957 states and 1218 transitions. [2021-12-06 18:47:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:47:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-12-06 18:47:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:57,503 INFO L225 Difference]: With dead ends: 957 [2021-12-06 18:47:57,503 INFO L226 Difference]: Without dead ends: 957 [2021-12-06 18:47:57,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:57,503 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 878 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:57,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2193 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-12-06 18:47:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 532. [2021-12-06 18:47:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 451 states have (on average 1.2594235033259424) internal successors, (568), 456 states have internal predecessors, (568), 45 states have call successors, (45), 29 states have call predecessors, (45), 35 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2021-12-06 18:47:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 669 transitions. [2021-12-06 18:47:57,510 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 669 transitions. Word has length 58 [2021-12-06 18:47:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:57,510 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 669 transitions. [2021-12-06 18:47:57,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 669 transitions. [2021-12-06 18:47:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 18:47:57,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:57,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:57,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-06 18:47:57,511 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2107046685, now seen corresponding path program 1 times [2021-12-06 18:47:57,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:57,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553054370] [2021-12-06 18:47:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:57,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 18:47:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:57,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553054370] [2021-12-06 18:47:57,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553054370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:57,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:57,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:57,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665559632] [2021-12-06 18:47:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:57,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:57,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:57,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:57,590 INFO L87 Difference]: Start difference. First operand 532 states and 669 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:57,964 INFO L93 Difference]: Finished difference Result 561 states and 705 transitions. [2021-12-06 18:47:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2021-12-06 18:47:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:57,965 INFO L225 Difference]: With dead ends: 561 [2021-12-06 18:47:57,965 INFO L226 Difference]: Without dead ends: 542 [2021-12-06 18:47:57,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:57,965 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 220 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:57,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 3137 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-06 18:47:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 530. [2021-12-06 18:47:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 449 states have (on average 1.2583518930957684) internal successors, (565), 454 states have internal predecessors, (565), 45 states have call successors, (45), 29 states have call predecessors, (45), 35 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2021-12-06 18:47:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 666 transitions. [2021-12-06 18:47:57,971 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 666 transitions. Word has length 62 [2021-12-06 18:47:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:57,971 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 666 transitions. [2021-12-06 18:47:57,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 666 transitions. [2021-12-06 18:47:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 18:47:57,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:57,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:57,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-06 18:47:57,972 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -790506152, now seen corresponding path program 1 times [2021-12-06 18:47:57,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:57,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498616874] [2021-12-06 18:47:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:57,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:47:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:58,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:58,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498616874] [2021-12-06 18:47:58,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498616874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:58,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:58,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:47:58,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224549584] [2021-12-06 18:47:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:58,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:47:58,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:47:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:58,015 INFO L87 Difference]: Start difference. First operand 530 states and 666 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:47:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:58,201 INFO L93 Difference]: Finished difference Result 534 states and 670 transitions. [2021-12-06 18:47:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:47:58,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2021-12-06 18:47:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:58,203 INFO L225 Difference]: With dead ends: 534 [2021-12-06 18:47:58,203 INFO L226 Difference]: Without dead ends: 525 [2021-12-06 18:47:58,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:58,203 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 236 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:58,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1319 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-06 18:47:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 513. [2021-12-06 18:47:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 435 states have (on average 1.2551724137931035) internal successors, (546), 440 states have internal predecessors, (546), 42 states have call successors, (42), 29 states have call predecessors, (42), 35 states have return successors, (52), 43 states have call predecessors, (52), 38 states have call successors, (52) [2021-12-06 18:47:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 640 transitions. [2021-12-06 18:47:58,208 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 640 transitions. Word has length 63 [2021-12-06 18:47:58,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:58,208 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 640 transitions. [2021-12-06 18:47:58,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:47:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 640 transitions. [2021-12-06 18:47:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 18:47:58,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:58,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:58,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-06 18:47:58,209 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1970957845, now seen corresponding path program 1 times [2021-12-06 18:47:58,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:58,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054044124] [2021-12-06 18:47:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:58,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 18:47:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 18:47:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:58,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:58,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054044124] [2021-12-06 18:47:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054044124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:58,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:47:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92112513] [2021-12-06 18:47:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:47:58,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:47:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:47:58,298 INFO L87 Difference]: Start difference. First operand 513 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:58,682 INFO L93 Difference]: Finished difference Result 539 states and 671 transitions. [2021-12-06 18:47:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:47:58,683 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2021-12-06 18:47:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:58,684 INFO L225 Difference]: With dead ends: 539 [2021-12-06 18:47:58,684 INFO L226 Difference]: Without dead ends: 504 [2021-12-06 18:47:58,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:47:58,684 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 298 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:58,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2761 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:47:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-06 18:47:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 492. [2021-12-06 18:47:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 419 states have (on average 1.2553699284009547) internal successors, (526), 424 states have internal predecessors, (526), 38 states have call successors, (38), 28 states have call predecessors, (38), 34 states have return successors, (47), 39 states have call predecessors, (47), 34 states have call successors, (47) [2021-12-06 18:47:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 611 transitions. [2021-12-06 18:47:58,689 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 611 transitions. Word has length 60 [2021-12-06 18:47:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:58,689 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 611 transitions. [2021-12-06 18:47:58,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:47:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 611 transitions. [2021-12-06 18:47:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 18:47:58,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:58,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-06 18:47:58,690 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 789888525, now seen corresponding path program 1 times [2021-12-06 18:47:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324798979] [2021-12-06 18:47:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:58,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 18:47:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 18:47:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:58,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324798979] [2021-12-06 18:47:58,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324798979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:58,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:58,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:58,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008259396] [2021-12-06 18:47:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:58,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:58,724 INFO L87 Difference]: Start difference. First operand 492 states and 611 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:58,840 INFO L93 Difference]: Finished difference Result 502 states and 623 transitions. [2021-12-06 18:47:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:58,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-12-06 18:47:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:58,841 INFO L225 Difference]: With dead ends: 502 [2021-12-06 18:47:58,841 INFO L226 Difference]: Without dead ends: 496 [2021-12-06 18:47:58,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:58,841 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 148 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:58,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1255 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-12-06 18:47:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 484. [2021-12-06 18:47:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 412 states have (on average 1.2548543689320388) internal successors, (517), 417 states have internal predecessors, (517), 37 states have call successors, (37), 28 states have call predecessors, (37), 34 states have return successors, (45), 38 states have call predecessors, (45), 33 states have call successors, (45) [2021-12-06 18:47:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 599 transitions. [2021-12-06 18:47:58,846 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 599 transitions. Word has length 58 [2021-12-06 18:47:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:58,846 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 599 transitions. [2021-12-06 18:47:58,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:47:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 599 transitions. [2021-12-06 18:47:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 18:47:58,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:58,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:58,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-06 18:47:58,847 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2051318318, now seen corresponding path program 1 times [2021-12-06 18:47:58,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:58,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610704011] [2021-12-06 18:47:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:58,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:47:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:47:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:47:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:47:58,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:58,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610704011] [2021-12-06 18:47:58,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610704011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:58,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:58,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:47:58,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640269399] [2021-12-06 18:47:58,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:58,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:47:58,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:47:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:47:58,888 INFO L87 Difference]: Start difference. First operand 484 states and 599 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:59,010 INFO L93 Difference]: Finished difference Result 496 states and 614 transitions. [2021-12-06 18:47:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:47:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2021-12-06 18:47:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:59,011 INFO L225 Difference]: With dead ends: 496 [2021-12-06 18:47:59,011 INFO L226 Difference]: Without dead ends: 486 [2021-12-06 18:47:59,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:47:59,012 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 88 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:59,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1372 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:47:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-12-06 18:47:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 474. [2021-12-06 18:47:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 404 states have (on average 1.254950495049505) internal successors, (507), 409 states have internal predecessors, (507), 35 states have call successors, (35), 28 states have call predecessors, (35), 34 states have return successors, (43), 36 states have call predecessors, (43), 31 states have call successors, (43) [2021-12-06 18:47:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 585 transitions. [2021-12-06 18:47:59,019 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 585 transitions. Word has length 60 [2021-12-06 18:47:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:59,019 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 585 transitions. [2021-12-06 18:47:59,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:47:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 585 transitions. [2021-12-06 18:47:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 18:47:59,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:59,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:59,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-06 18:47:59,021 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1819248512, now seen corresponding path program 1 times [2021-12-06 18:47:59,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:59,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116298419] [2021-12-06 18:47:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 18:47:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:47:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 18:47:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:59,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:59,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116298419] [2021-12-06 18:47:59,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116298419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:59,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:59,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:47:59,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102451561] [2021-12-06 18:47:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:59,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:47:59,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:47:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:59,112 INFO L87 Difference]: Start difference. First operand 474 states and 585 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:59,593 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2021-12-06 18:47:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:47:59,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2021-12-06 18:47:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:59,595 INFO L225 Difference]: With dead ends: 765 [2021-12-06 18:47:59,595 INFO L226 Difference]: Without dead ends: 732 [2021-12-06 18:47:59,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:47:59,596 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 455 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:59,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 3097 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 18:47:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-06 18:47:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 368. [2021-12-06 18:47:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 310 states have (on average 1.270967741935484) internal successors, (394), 314 states have internal predecessors, (394), 30 states have call successors, (30), 24 states have call predecessors, (30), 27 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2021-12-06 18:47:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 460 transitions. [2021-12-06 18:47:59,601 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 460 transitions. Word has length 60 [2021-12-06 18:47:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:59,601 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 460 transitions. [2021-12-06 18:47:59,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:47:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 460 transitions. [2021-12-06 18:47:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 18:47:59,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:59,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:59,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-06 18:47:59,602 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1463057072, now seen corresponding path program 1 times [2021-12-06 18:47:59,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75970682] [2021-12-06 18:47:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:47:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:47:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:47:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 18:47:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:59,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75970682] [2021-12-06 18:47:59,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75970682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:47:59,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:47:59,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:47:59,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913584826] [2021-12-06 18:47:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:47:59,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:47:59,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:47:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:47:59,726 INFO L87 Difference]: Start difference. First operand 368 states and 460 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:47:59,933 INFO L93 Difference]: Finished difference Result 373 states and 465 transitions. [2021-12-06 18:47:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:47:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2021-12-06 18:47:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:47:59,934 INFO L225 Difference]: With dead ends: 373 [2021-12-06 18:47:59,934 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 18:47:59,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:47:59,935 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 222 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:47:59,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1396 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:47:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 18:47:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 361. [2021-12-06 18:47:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 303 states have (on average 1.2640264026402641) internal successors, (383), 307 states have internal predecessors, (383), 30 states have call successors, (30), 24 states have call predecessors, (30), 27 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2021-12-06 18:47:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 449 transitions. [2021-12-06 18:47:59,939 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 449 transitions. Word has length 64 [2021-12-06 18:47:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:59,939 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 449 transitions. [2021-12-06 18:47:59,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:47:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 449 transitions. [2021-12-06 18:47:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 18:47:59,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:59,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-06 18:47:59,940 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:47:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 659665596, now seen corresponding path program 1 times [2021-12-06 18:47:59,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:59,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880480919] [2021-12-06 18:47:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 18:47:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 18:47:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 18:47:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:47:59,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880480919] [2021-12-06 18:47:59,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880480919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:47:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278533828] [2021-12-06 18:47:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:59,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:47:59,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:59,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:47:59,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:48:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:48:00,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:00,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:00,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278533828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:00,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:00,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 18:48:00,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992655792] [2021-12-06 18:48:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:00,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:00,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:00,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:00,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:00,140 INFO L87 Difference]: Start difference. First operand 361 states and 449 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:48:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:00,145 INFO L93 Difference]: Finished difference Result 346 states and 431 transitions. [2021-12-06 18:48:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:48:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2021-12-06 18:48:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:00,146 INFO L225 Difference]: With dead ends: 346 [2021-12-06 18:48:00,147 INFO L226 Difference]: Without dead ends: 332 [2021-12-06 18:48:00,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:48:00,147 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:00,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 919 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-06 18:48:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-12-06 18:48:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 280 states have (on average 1.275) internal successors, (357), 283 states have internal predecessors, (357), 27 states have call successors, (27), 22 states have call predecessors, (27), 24 states have return successors, (32), 26 states have call predecessors, (32), 24 states have call successors, (32) [2021-12-06 18:48:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 416 transitions. [2021-12-06 18:48:00,151 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 416 transitions. Word has length 62 [2021-12-06 18:48:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:00,151 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 416 transitions. [2021-12-06 18:48:00,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:48:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 416 transitions. [2021-12-06 18:48:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 18:48:00,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:00,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:00,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:00,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:00,352 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash -747836141, now seen corresponding path program 1 times [2021-12-06 18:48:00,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:00,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892922497] [2021-12-06 18:48:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:00,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 18:48:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:48:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:48:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:00,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:00,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892922497] [2021-12-06 18:48:00,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892922497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:00,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:00,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 18:48:00,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746215985] [2021-12-06 18:48:00,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:00,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:48:00,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:00,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:48:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:48:00,478 INFO L87 Difference]: Start difference. First operand 332 states and 416 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:48:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:00,831 INFO L93 Difference]: Finished difference Result 343 states and 430 transitions. [2021-12-06 18:48:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:48:00,831 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2021-12-06 18:48:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:00,832 INFO L225 Difference]: With dead ends: 343 [2021-12-06 18:48:00,832 INFO L226 Difference]: Without dead ends: 270 [2021-12-06 18:48:00,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:48:00,832 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 154 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:00,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1701 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:48:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-06 18:48:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2021-12-06 18:48:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 220 states have (on average 1.3) internal successors, (286), 222 states have internal predecessors, (286), 22 states have call successors, (22), 19 states have call predecessors, (22), 21 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2021-12-06 18:48:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 336 transitions. [2021-12-06 18:48:00,835 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 336 transitions. Word has length 64 [2021-12-06 18:48:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:00,835 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 336 transitions. [2021-12-06 18:48:00,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:48:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 336 transitions. [2021-12-06 18:48:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:48:00,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:00,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:00,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-06 18:48:00,836 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 611039127, now seen corresponding path program 1 times [2021-12-06 18:48:00,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:00,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054266602] [2021-12-06 18:48:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:00,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:48:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:48:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:00,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054266602] [2021-12-06 18:48:00,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054266602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:00,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:00,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:48:00,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414018333] [2021-12-06 18:48:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:00,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:48:00,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:48:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:00,920 INFO L87 Difference]: Start difference. First operand 264 states and 336 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 18:48:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:01,087 INFO L93 Difference]: Finished difference Result 270 states and 342 transitions. [2021-12-06 18:48:01,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:48:01,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2021-12-06 18:48:01,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:01,088 INFO L225 Difference]: With dead ends: 270 [2021-12-06 18:48:01,088 INFO L226 Difference]: Without dead ends: 270 [2021-12-06 18:48:01,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:48:01,088 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 244 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:01,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 714 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-06 18:48:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2021-12-06 18:48:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 222 states have internal predecessors, (285), 22 states have call successors, (22), 19 states have call predecessors, (22), 21 states have return successors, (28), 22 states have call predecessors, (28), 20 states have call successors, (28) [2021-12-06 18:48:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2021-12-06 18:48:01,091 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 68 [2021-12-06 18:48:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:01,092 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2021-12-06 18:48:01,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 18:48:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2021-12-06 18:48:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 18:48:01,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:01,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:01,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-06 18:48:01,093 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -993138030, now seen corresponding path program 1 times [2021-12-06 18:48:01,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:01,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363298069] [2021-12-06 18:48:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:48:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:01,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363298069] [2021-12-06 18:48:01,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363298069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:01,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:01,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:48:01,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098997113] [2021-12-06 18:48:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:01,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:48:01,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:48:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:48:01,165 INFO L87 Difference]: Start difference. First operand 264 states and 335 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 18:48:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:01,314 INFO L93 Difference]: Finished difference Result 216 states and 264 transitions. [2021-12-06 18:48:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:48:01,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2021-12-06 18:48:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:01,315 INFO L225 Difference]: With dead ends: 216 [2021-12-06 18:48:01,315 INFO L226 Difference]: Without dead ends: 216 [2021-12-06 18:48:01,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:48:01,315 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 47 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:01,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 755 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-06 18:48:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2021-12-06 18:48:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 146 states have internal predecessors, (179), 15 states have call successors, (15), 13 states have call predecessors, (15), 14 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2021-12-06 18:48:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-12-06 18:48:01,318 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 70 [2021-12-06 18:48:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:01,318 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-12-06 18:48:01,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 18:48:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2021-12-06 18:48:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 18:48:01,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:01,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:01,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-06 18:48:01,319 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash -365687255, now seen corresponding path program 1 times [2021-12-06 18:48:01,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:01,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494412040] [2021-12-06 18:48:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:48:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 18:48:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:01,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:01,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494412040] [2021-12-06 18:48:01,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494412040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:01,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:01,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:48:01,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735586444] [2021-12-06 18:48:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:01,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:48:01,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:01,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:48:01,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:01,406 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:48:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:01,586 INFO L93 Difference]: Finished difference Result 221 states and 263 transitions. [2021-12-06 18:48:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:48:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2021-12-06 18:48:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:01,587 INFO L225 Difference]: With dead ends: 221 [2021-12-06 18:48:01,587 INFO L226 Difference]: Without dead ends: 185 [2021-12-06 18:48:01,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:48:01,588 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 198 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:01,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 941 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-06 18:48:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 173. [2021-12-06 18:48:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 143 states have (on average 1.2027972027972027) internal successors, (172), 144 states have internal predecessors, (172), 15 states have call successors, (15), 13 states have call predecessors, (15), 14 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2021-12-06 18:48:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2021-12-06 18:48:01,590 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 84 [2021-12-06 18:48:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:01,590 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2021-12-06 18:48:01,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:48:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2021-12-06 18:48:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:48:01,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:01,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:01,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-06 18:48:01,591 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1430253116, now seen corresponding path program 1 times [2021-12-06 18:48:01,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:01,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423998344] [2021-12-06 18:48:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:48:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:48:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:01,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:01,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423998344] [2021-12-06 18:48:01,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423998344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:01,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:01,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:48:01,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704407433] [2021-12-06 18:48:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:01,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:48:01,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:48:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:01,676 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:48:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:01,834 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2021-12-06 18:48:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:48:01,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2021-12-06 18:48:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:01,835 INFO L225 Difference]: With dead ends: 198 [2021-12-06 18:48:01,835 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 18:48:01,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:48:01,835 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 111 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:01,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 920 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 18:48:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2021-12-06 18:48:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 117 states have internal predecessors, (135), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-06 18:48:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2021-12-06 18:48:01,837 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 86 [2021-12-06 18:48:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:01,837 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2021-12-06 18:48:01,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 18:48:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2021-12-06 18:48:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 18:48:01,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:01,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:01,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-06 18:48:01,838 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -336818959, now seen corresponding path program 1 times [2021-12-06 18:48:01,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:01,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312566765] [2021-12-06 18:48:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:48:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:48:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 18:48:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 18:48:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:48:01,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:01,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312566765] [2021-12-06 18:48:01,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312566765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:01,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138399391] [2021-12-06 18:48:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:01,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:01,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:01,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:48:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:48:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 18:48:02,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:02,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138399391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:02,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:02,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-06 18:48:02,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539083591] [2021-12-06 18:48:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:02,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:02,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:02,086 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:02,091 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2021-12-06 18:48:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 103 [2021-12-06 18:48:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:02,092 INFO L225 Difference]: With dead ends: 170 [2021-12-06 18:48:02,092 INFO L226 Difference]: Without dead ends: 170 [2021-12-06 18:48:02,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:48:02,092 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 16 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:02,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 236 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-06 18:48:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2021-12-06 18:48:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.152) internal successors, (144), 125 states have internal predecessors, (144), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2021-12-06 18:48:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 172 transitions. [2021-12-06 18:48:02,094 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 172 transitions. Word has length 103 [2021-12-06 18:48:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:02,094 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 172 transitions. [2021-12-06 18:48:02,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 172 transitions. [2021-12-06 18:48:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 18:48:02,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:02,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:02,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:02,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-12-06 18:48:02,296 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:02,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1586409075, now seen corresponding path program 1 times [2021-12-06 18:48:02,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:02,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95936232] [2021-12-06 18:48:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:02,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:48:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:48:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 18:48:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 18:48:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:48:02,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95936232] [2021-12-06 18:48:02,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95936232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:48:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469686513] [2021-12-06 18:48:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:02,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:48:02,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:48:02,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:48:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:48:02,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:48:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 18:48:02,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:48:02,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469686513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:02,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:48:02,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-06 18:48:02,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441833841] [2021-12-06 18:48:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:02,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:48:02,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:48:02,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:48:02,603 INFO L87 Difference]: Start difference. First operand 151 states and 172 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:48:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:02,652 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2021-12-06 18:48:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:48:02,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2021-12-06 18:48:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:02,653 INFO L225 Difference]: With dead ends: 151 [2021-12-06 18:48:02,653 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 18:48:02,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:48:02,654 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 144 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:02,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 214 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 18:48:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-12-06 18:48:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.136) internal successors, (142), 125 states have internal predecessors, (142), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2021-12-06 18:48:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2021-12-06 18:48:02,655 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 103 [2021-12-06 18:48:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:02,655 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2021-12-06 18:48:02,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:48:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2021-12-06 18:48:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 18:48:02,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:02,656 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:02,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 18:48:02,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:48:02,857 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:02,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash -354735347, now seen corresponding path program 1 times [2021-12-06 18:48:02,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:02,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927419474] [2021-12-06 18:48:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:02,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:48:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:48:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 18:48:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 18:48:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:48:02,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:02,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927419474] [2021-12-06 18:48:02,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927419474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:02,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:02,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:48:02,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009425305] [2021-12-06 18:48:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:48:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:48:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:48:02,955 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:03,021 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-12-06 18:48:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:48:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2021-12-06 18:48:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:03,022 INFO L225 Difference]: With dead ends: 170 [2021-12-06 18:48:03,022 INFO L226 Difference]: Without dead ends: 170 [2021-12-06 18:48:03,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:48:03,022 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 74 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:03,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 367 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-06 18:48:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2021-12-06 18:48:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.104) internal successors, (138), 125 states have internal predecessors, (138), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2021-12-06 18:48:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2021-12-06 18:48:03,024 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 104 [2021-12-06 18:48:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:03,024 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2021-12-06 18:48:03,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2021-12-06 18:48:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 18:48:03,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:03,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:03,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-12-06 18:48:03,025 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 631465488, now seen corresponding path program 1 times [2021-12-06 18:48:03,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:03,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446682406] [2021-12-06 18:48:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:03,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:48:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:48:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 18:48:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 18:48:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:48:03,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:03,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446682406] [2021-12-06 18:48:03,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446682406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:03,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:03,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:48:03,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284934364] [2021-12-06 18:48:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:48:03,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:48:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:48:03,112 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:03,351 INFO L93 Difference]: Finished difference Result 259 states and 281 transitions. [2021-12-06 18:48:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:48:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2021-12-06 18:48:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:03,351 INFO L225 Difference]: With dead ends: 259 [2021-12-06 18:48:03,351 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 18:48:03,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:48:03,352 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 129 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:03,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 765 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:48:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 18:48:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-12-06 18:48:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.096) internal successors, (137), 125 states have internal predecessors, (137), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2021-12-06 18:48:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-12-06 18:48:03,354 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 104 [2021-12-06 18:48:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:03,354 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-12-06 18:48:03,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-12-06 18:48:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 18:48:03,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:03,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:03,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-12-06 18:48:03,355 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 18:48:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1766005042, now seen corresponding path program 1 times [2021-12-06 18:48:03,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:03,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980668881] [2021-12-06 18:48:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:03,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:48:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 18:48:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:48:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:48:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 18:48:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:48:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 18:48:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 18:48:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:48:03,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980668881] [2021-12-06 18:48:03,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980668881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:03,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:03,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:48:03,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755425219] [2021-12-06 18:48:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:03,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:48:03,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:48:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:48:03,458 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:03,645 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2021-12-06 18:48:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:48:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 104 [2021-12-06 18:48:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:03,646 INFO L225 Difference]: With dead ends: 148 [2021-12-06 18:48:03,646 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:48:03,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-12-06 18:48:03,646 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 190 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:03,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 567 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:48:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:48:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:48:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:48:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:48:03,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2021-12-06 18:48:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:03,647 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:48:03,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 18:48:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:48:03,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:48:03,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-06 18:48:03,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-06 18:48:03,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-12-06 18:48:03,651 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:03,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:48:03,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:48:03 BoogieIcfgContainer [2021-12-06 18:48:03,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:48:03,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:48:03,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:48:03,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:48:03,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:47:37" (3/4) ... [2021-12-06 18:48:03,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure SendSrbSynchronous [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSignalCompletion [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure AG_SetStatusAndReturn [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioSendToNextDriver [2021-12-06 18:48:03,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioIsPlayActive [2021-12-06 18:48:03,663 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-12-06 18:48:03,663 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-06 18:48:03,663 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure CdAudioForwardIrpSynchronous [2021-12-06 18:48:03,663 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure HPCdrCompletion [2021-12-06 18:48:03,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2021-12-06 18:48:03,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-12-06 18:48:03,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 18:48:03,693 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:48:03,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:48:03,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:48:03,807 INFO L158 Benchmark]: Toolchain (without parser) took 28068.73ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 93.4MB in the beginning and 148.6MB in the end (delta: -55.2MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory was 112.2MB in the beginning and 112.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.03ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 90.4MB in the end (delta: 2.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.90ms. Allocated memory is still 136.3MB. Free memory was 89.9MB in the beginning and 83.2MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: Boogie Preprocessor took 51.04ms. Allocated memory is still 136.3MB. Free memory was 83.2MB in the beginning and 78.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: RCFGBuilder took 858.38ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 78.4MB in the beginning and 88.8MB in the end (delta: -10.4MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,807 INFO L158 Benchmark]: TraceAbstraction took 26552.10ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 87.7MB in the beginning and 184.2MB in the end (delta: -96.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:48:03,808 INFO L158 Benchmark]: Witness Printer took 151.87ms. Allocated memory is still 237.0MB. Free memory was 183.2MB in the beginning and 148.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-06 18:48:03,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory was 112.2MB in the beginning and 112.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.03ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 90.4MB in the end (delta: 2.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.90ms. Allocated memory is still 136.3MB. Free memory was 89.9MB in the beginning and 83.2MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.04ms. Allocated memory is still 136.3MB. Free memory was 83.2MB in the beginning and 78.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 858.38ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 78.4MB in the beginning and 88.8MB in the end (delta: -10.4MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. * TraceAbstraction took 26552.10ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 87.7MB in the beginning and 184.2MB in the end (delta: -96.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 151.87ms. Allocated memory is still 237.0MB. Free memory was 183.2MB in the beginning and 148.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1717]: 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 14 procedures, 469 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 26.5s, OverallIterations: 77, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22252 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21773 mSDsluCounter, 172935 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135651 mSDsCounter, 5729 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40837 IncrementalHoareTripleChecker+Invalid, 46566 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5729 mSolverCounterUnsat, 37284 mSDtfsCounter, 40837 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 779 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1065occurred in iteration=10, InterpolantAutomatonStates: 680, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 77 MinimizatonAttempts, 3287 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 4160 NumberOfCodeBlocks, 4160 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 4080 ConstructedInterpolants, 0 QuantifiedInterpolants, 10178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1664 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 80 InterpolantComputations, 77 PerfectInterpolantSequences, 71/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 18:48:03,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ce2a8e-1855-470f-a8d1-a81d05463dc2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE