./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY --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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:52:38,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:52:38,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:52:38,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:52:38,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:52:38,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:52:38,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:52:38,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:52:38,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:52:38,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:52:38,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:52:38,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:52:38,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:52:38,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:52:38,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:52:38,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:52:38,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:52:38,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:52:38,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:52:38,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:52:38,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:52:38,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:52:38,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:52:38,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:52:38,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:52:38,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:52:38,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:52:38,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:52:38,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:52:38,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:52:38,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:52:38,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:52:38,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:52:38,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:52:38,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:52:38,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:52:38,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:52:38,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:52:38,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:52:38,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:52:38,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:52:38,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:52:38,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:52:38,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:52:38,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:52:38,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:52:38,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:52:38,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:52:38,349 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:52:38,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:52:38,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:52:38,350 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:52:38,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:52:38,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:52:38,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:52:38,352 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:52:38,352 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:52:38,352 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:52:38,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:52:38,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:52:38,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:52:38,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:52:38,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:52:38,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:52:38,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:52:38,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:38,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:52:38,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:52:38,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:52:38,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:52:38,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:52:38,357 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_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-11-07 07:52:38,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:52:38,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:52:38,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:52:38,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:52:38,749 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:52:38,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-11-07 07:52:38,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/236165edf/b1d77a96766c4b16a03da04859184e15/FLAG9d5e71110 [2021-11-07 07:52:39,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:52:39,440 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-11-07 07:52:39,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/236165edf/b1d77a96766c4b16a03da04859184e15/FLAG9d5e71110 [2021-11-07 07:52:39,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/236165edf/b1d77a96766c4b16a03da04859184e15 [2021-11-07 07:52:39,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:52:39,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:52:39,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:39,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:52:39,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:52:39,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:39" (1/1) ... [2021-11-07 07:52:39,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bff1559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:39, skipping insertion in model container [2021-11-07 07:52:39,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:39" (1/1) ... [2021-11-07 07:52:39,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:52:39,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:52:40,111 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-11-07 07:52:40,117 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-11-07 07:52:40,122 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-11-07 07:52:40,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:40,150 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:52:40,226 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-11-07 07:52:40,231 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-11-07 07:52:40,233 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-11-07 07:52:40,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:40,286 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:52:40,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40 WrapperNode [2021-11-07 07:52:40,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:40,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:52:40,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:52:40,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:52:40,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:52:40,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:52:40,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:52:40,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:52:40,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (1/1) ... [2021-11-07 07:52:40,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:40,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:40,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:52:40,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:52:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:52:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:52:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:52:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:52:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:52:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:52:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:52:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:52:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:52:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:52:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:52:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:52:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:52:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:52:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:52:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:52:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:52:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:52:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:52:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:52:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:52:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:52:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:52:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:52:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:52:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:52:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:52:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:52:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:52:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:52:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:52:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:52:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:52:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:52:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:52:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:52:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:52:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:52:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:52:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:52:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:52:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:52:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:52:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:52:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:52:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:52:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:52:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:52:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:52:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:52:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:52:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:52:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:52:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:52:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:52:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:52:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:52:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:52:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-07 07:52:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:52:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:52:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:52:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:52:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:52:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:52:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:52:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:52:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:52:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:52:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:52:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:52:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:52:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:52:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:52:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:52:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:52:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:52:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:52:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:52:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:52:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:52:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:52:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:52:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:52:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:52:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:52:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:52:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:52:41,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:52:41,227 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-07 07:52:41,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:41 BoogieIcfgContainer [2021-11-07 07:52:41,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:52:41,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:52:41,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:52:41,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:52:41,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:52:39" (1/3) ... [2021-11-07 07:52:41,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ec0c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:41, skipping insertion in model container [2021-11-07 07:52:41,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:40" (2/3) ... [2021-11-07 07:52:41,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ec0c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:41, skipping insertion in model container [2021-11-07 07:52:41,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:41" (3/3) ... [2021-11-07 07:52:41,255 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-11-07 07:52:41,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:52:41,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-07 07:52:41,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:52:41,346 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 [2021-11-07 07:52:41,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-07 07:52:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:52:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:52:41,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:41,377 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:41,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240052, now seen corresponding path program 1 times [2021-11-07 07:52:41,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:41,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804362575] [2021-11-07 07:52:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:41,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:41,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:41,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804362575] [2021-11-07 07:52:41,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804362575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:41,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:41,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:41,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112018195] [2021-11-07 07:52:41,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:41,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:41,740 INFO L87 Difference]: Start difference. First operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:42,128 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-11-07 07:52:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 07:52:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:42,147 INFO L225 Difference]: With dead ends: 143 [2021-11-07 07:52:42,148 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 07:52:42,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 07:52:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-11-07 07:52:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 131 states have internal predecessors, (139), 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) [2021-11-07 07:52:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-11-07 07:52:42,236 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 7 [2021-11-07 07:52:42,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:42,237 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-11-07 07:52:42,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-11-07 07:52:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:52:42,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:42,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:42,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:52:42,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240051, now seen corresponding path program 1 times [2021-11-07 07:52:42,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:42,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901455926] [2021-11-07 07:52:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:42,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:42,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:42,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901455926] [2021-11-07 07:52:42,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901455926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:42,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:42,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:42,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75833992] [2021-11-07 07:52:42,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:42,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:42,344 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:42,671 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-11-07 07:52:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 07:52:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:42,677 INFO L225 Difference]: With dead ends: 152 [2021-11-07 07:52:42,677 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 07:52:42,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 07:52:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2021-11-07 07:52:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 135 states have internal predecessors, (143), 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) [2021-11-07 07:52:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2021-11-07 07:52:42,700 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 7 [2021-11-07 07:52:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:42,700 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2021-11-07 07:52:42,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2021-11-07 07:52:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 07:52:42,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:42,701 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:42,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:52:42,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash 152402486, now seen corresponding path program 1 times [2021-11-07 07:52:42,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:42,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278204999] [2021-11-07 07:52:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:42,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:42,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:42,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278204999] [2021-11-07 07:52:42,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278204999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:42,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:42,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:42,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959756343] [2021-11-07 07:52:42,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:52:42,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:52:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:42,920 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:43,254 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2021-11-07 07:52:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:52:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-07 07:52:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:43,256 INFO L225 Difference]: With dead ends: 192 [2021-11-07 07:52:43,257 INFO L226 Difference]: Without dead ends: 192 [2021-11-07 07:52:43,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-07 07:52:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2021-11-07 07:52:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 150 states have internal predecessors, (171), 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) [2021-11-07 07:52:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-11-07 07:52:43,266 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 13 [2021-11-07 07:52:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:43,267 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-11-07 07:52:43,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-11-07 07:52:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 07:52:43,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:43,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:43,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:52:43,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 152402485, now seen corresponding path program 1 times [2021-11-07 07:52:43,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:43,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072525191] [2021-11-07 07:52:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:43,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:43,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:43,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072525191] [2021-11-07 07:52:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072525191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:43,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:43,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:43,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132866703] [2021-11-07 07:52:43,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:52:43,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:52:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:43,346 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:43,610 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-11-07 07:52:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:52:43,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-07 07:52:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:43,612 INFO L225 Difference]: With dead ends: 156 [2021-11-07 07:52:43,612 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 07:52:43,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 07:52:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-11-07 07:52:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 138 states have internal predecessors, (153), 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) [2021-11-07 07:52:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2021-11-07 07:52:43,639 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 13 [2021-11-07 07:52:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:43,640 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2021-11-07 07:52:43,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2021-11-07 07:52:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:52:43,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:43,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:43,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:52:43,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash 429896239, now seen corresponding path program 1 times [2021-11-07 07:52:43,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:43,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389090260] [2021-11-07 07:52:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:43,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:43,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:43,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389090260] [2021-11-07 07:52:43,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389090260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:43,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:43,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:52:43,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404358852] [2021-11-07 07:52:43,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:52:43,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:52:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:43,741 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:43,953 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-11-07 07:52:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:52:43,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 07:52:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:43,955 INFO L225 Difference]: With dead ends: 158 [2021-11-07 07:52:43,955 INFO L226 Difference]: Without dead ends: 158 [2021-11-07 07:52:43,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-07 07:52:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2021-11-07 07:52:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.5360824742268042) internal successors, (149), 136 states have internal predecessors, (149), 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) [2021-11-07 07:52:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2021-11-07 07:52:43,961 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2021-11-07 07:52:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:43,962 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2021-11-07 07:52:43,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2021-11-07 07:52:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:52:43,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:43,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:43,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:52:43,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash 442001777, now seen corresponding path program 1 times [2021-11-07 07:52:43,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:43,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37043939] [2021-11-07 07:52:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:43,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:44,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:44,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37043939] [2021-11-07 07:52:44,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37043939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:44,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:44,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:52:44,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037474017] [2021-11-07 07:52:44,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:52:44,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:52:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:44,035 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:44,282 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-11-07 07:52:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:52:44,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-07 07:52:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:44,284 INFO L225 Difference]: With dead ends: 139 [2021-11-07 07:52:44,284 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 07:52:44,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:52:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 07:52:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-07 07:52:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 135 states have internal predecessors, (147), 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) [2021-11-07 07:52:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-11-07 07:52:44,294 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 16 [2021-11-07 07:52:44,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:44,294 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-11-07 07:52:44,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-11-07 07:52:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:52:44,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:44,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:44,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:52:44,302 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash 442001778, now seen corresponding path program 1 times [2021-11-07 07:52:44,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:44,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62227590] [2021-11-07 07:52:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:44,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:44,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:44,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62227590] [2021-11-07 07:52:44,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62227590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:44,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:44,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:52:44,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758964058] [2021-11-07 07:52:44,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:52:44,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:52:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:44,448 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:44,729 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-11-07 07:52:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:52:44,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-07 07:52:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:44,731 INFO L225 Difference]: With dead ends: 138 [2021-11-07 07:52:44,731 INFO L226 Difference]: Without dead ends: 138 [2021-11-07 07:52:44,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:52:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-07 07:52:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-07 07:52:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 134 states have internal predecessors, (145), 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) [2021-11-07 07:52:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-11-07 07:52:44,737 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 16 [2021-11-07 07:52:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:44,737 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-11-07 07:52:44,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-11-07 07:52:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:52:44,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:44,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:44,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:52:44,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash -549611590, now seen corresponding path program 1 times [2021-11-07 07:52:44,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:44,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207213771] [2021-11-07 07:52:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:44,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:44,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:44,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207213771] [2021-11-07 07:52:44,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207213771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:44,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:44,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:52:44,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154703602] [2021-11-07 07:52:44,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:52:44,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:52:44,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:52:44,883 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:45,218 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2021-11-07 07:52:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:52:45,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-07 07:52:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:45,221 INFO L225 Difference]: With dead ends: 198 [2021-11-07 07:52:45,221 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 07:52:45,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:52:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 07:52:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2021-11-07 07:52:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 139 states have internal predecessors, (150), 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) [2021-11-07 07:52:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-11-07 07:52:45,228 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2021-11-07 07:52:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:45,228 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-11-07 07:52:45,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-11-07 07:52:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:52:45,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:45,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:45,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:52:45,230 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:45,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash -63373389, now seen corresponding path program 1 times [2021-11-07 07:52:45,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:45,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920676639] [2021-11-07 07:52:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:45,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:45,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:45,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920676639] [2021-11-07 07:52:45,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920676639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:45,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:45,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 07:52:45,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009387521] [2021-11-07 07:52:45,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:52:45,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:52:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:52:45,384 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:45,807 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-11-07 07:52:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:52:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-07 07:52:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:45,809 INFO L225 Difference]: With dead ends: 143 [2021-11-07 07:52:45,809 INFO L226 Difference]: Without dead ends: 143 [2021-11-07 07:52:45,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:52:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-07 07:52:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-11-07 07:52:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 138 states have internal predecessors, (149), 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) [2021-11-07 07:52:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-11-07 07:52:45,815 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2021-11-07 07:52:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:45,816 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-11-07 07:52:45,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-11-07 07:52:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:52:45,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:45,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:45,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:52:45,818 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash -63373388, now seen corresponding path program 1 times [2021-11-07 07:52:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:45,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865323166] [2021-11-07 07:52:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:45,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:52:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:46,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:46,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865323166] [2021-11-07 07:52:46,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865323166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:46,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:46,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 07:52:46,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993060334] [2021-11-07 07:52:46,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:52:46,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:52:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:52:46,013 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:46,761 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-11-07 07:52:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:52:46,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-07 07:52:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:46,763 INFO L225 Difference]: With dead ends: 147 [2021-11-07 07:52:46,763 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 07:52:46,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:52:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 07:52:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-11-07 07:52:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 134 states have internal predecessors, (146), 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) [2021-11-07 07:52:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-11-07 07:52:46,769 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 20 [2021-11-07 07:52:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:46,769 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-11-07 07:52:46,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-11-07 07:52:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:52:46,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:46,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:46,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:52:46,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -195087453, now seen corresponding path program 1 times [2021-11-07 07:52:46,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:46,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040337795] [2021-11-07 07:52:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:46,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:52:46,788 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:52:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:52:46,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:52:46,827 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:52:46,828 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:52:46,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-07 07:52:46,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-07 07:52:46,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-07 07:52:46,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-07 07:52:46,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-07 07:52:46,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-07 07:52:46,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-07 07:52:46,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-07 07:52:46,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-07 07:52:46,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-07 07:52:46,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-07 07:52:46,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-07 07:52:46,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-07 07:52:46,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-07 07:52:46,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-07 07:52:46,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-07 07:52:46,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-07 07:52:46,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-07 07:52:46,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-07 07:52:46,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-07 07:52:46,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-07 07:52:46,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-07 07:52:46,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-11-07 07:52:46,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-07 07:52:46,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-07 07:52:46,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-11-07 07:52:46,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-07 07:52:46,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-07 07:52:46,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-11-07 07:52:46,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-11-07 07:52:46,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-11-07 07:52:46,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-11-07 07:52:46,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:52:46,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-11-07 07:52:46,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-11-07 07:52:46,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:52:46,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-11-07 07:52:46,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-11-07 07:52:46,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-11-07 07:52:46,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-11-07 07:52:46,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-11-07 07:52:46,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-11-07 07:52:46,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-11-07 07:52:46,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-11-07 07:52:46,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-11-07 07:52:46,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-11-07 07:52:46,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-11-07 07:52:46,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-11-07 07:52:46,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-11-07 07:52:46,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-11-07 07:52:46,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-11-07 07:52:46,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-11-07 07:52:46,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-11-07 07:52:46,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-11-07 07:52:46,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:52:46,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-11-07 07:52:46,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:52:46,856 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:46,860 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:52:46,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:52:46 BoogieIcfgContainer [2021-11-07 07:52:46,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:52:46,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:52:46,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:52:46,889 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:52:46,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:41" (3/4) ... [2021-11-07 07:52:46,893 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:52:46,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:52:46,895 INFO L168 Benchmark]: Toolchain (without parser) took 7195.21 ms. Allocated memory was 100.7 MB in the beginning and 167.8 MB in the end (delta: 67.1 MB). Free memory was 68.0 MB in the beginning and 135.8 MB in the end (delta: -67.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:52:46,895 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:52:46,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.27 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 68.4 MB in the end (delta: -664.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:52:46,896 INFO L168 Benchmark]: Boogie Preprocessor took 86.86 ms. Allocated memory is still 100.7 MB. Free memory was 68.4 MB in the beginning and 65.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:52:46,897 INFO L168 Benchmark]: RCFGBuilder took 857.71 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 65.6 MB in the beginning and 104.1 MB in the end (delta: -38.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:52:46,898 INFO L168 Benchmark]: TraceAbstraction took 5652.11 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 104.1 MB in the beginning and 136.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. [2021-11-07 07:52:46,898 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 167.8 MB. Free memory was 136.8 MB in the beginning and 135.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:52:46,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.27 ms. Allocated memory is still 100.7 MB. Free memory was 67.7 MB in the beginning and 68.4 MB in the end (delta: -664.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.86 ms. Allocated memory is still 100.7 MB. Free memory was 68.4 MB in the beginning and 65.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 857.71 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 65.6 MB in the beginning and 104.1 MB in the end (delta: -38.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5652.11 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 104.1 MB in the beginning and 136.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 167.8 MB. Free memory was 136.8 MB in the beginning and 135.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 767 SDtfs, 1265 SDslu, 1106 SDs, 0 SdLazy, 3165 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 152 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 07:52:46,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY --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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:52:49,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:52:49,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:52:49,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:52:49,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:52:49,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:52:49,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:52:49,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:52:49,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:52:49,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:52:49,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:52:49,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:52:49,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:52:49,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:52:49,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:52:49,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:52:49,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:52:49,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:52:49,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:52:49,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:52:49,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:52:49,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:52:49,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:52:49,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:52:49,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:52:49,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:52:49,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:52:49,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:52:49,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:52:49,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:52:49,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:52:49,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:52:49,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:52:49,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:52:49,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:52:49,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:52:49,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:52:49,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:52:49,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:52:49,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:52:49,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:52:49,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:52:49,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:52:49,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:52:49,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:52:49,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:52:49,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:52:49,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:52:49,737 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:52:49,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:52:49,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:52:49,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:52:49,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:52:49,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:52:49,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:52:49,743 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:52:49,743 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:52:49,744 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:52:49,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:52:49,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:52:49,745 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:52:49,745 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:52:49,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:52:49,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:52:49,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:52:49,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:52:49,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:52:49,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:49,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:52:49,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:52:49,749 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:52:49,750 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:52:49,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:52:49,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:52:49,751 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-11-07 07:52:50,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:52:50,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:52:50,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:52:50,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:52:50,119 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:52:50,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-11-07 07:52:50,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/7eafaebdd/b0f0848b5bcd41489d300059810c9d47/FLAGc3e8b9dd0 [2021-11-07 07:52:50,836 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:52:50,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-11-07 07:52:50,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/7eafaebdd/b0f0848b5bcd41489d300059810c9d47/FLAGc3e8b9dd0 [2021-11-07 07:52:51,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/data/7eafaebdd/b0f0848b5bcd41489d300059810c9d47 [2021-11-07 07:52:51,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:52:51,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:52:51,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:51,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:52:51,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:52:51,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0ca80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51, skipping insertion in model container [2021-11-07 07:52:51,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:52:51,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:52:51,586 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-11-07 07:52:51,589 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-11-07 07:52:51,591 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-11-07 07:52:51,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:51,612 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:52:51,649 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-11-07 07:52:51,651 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-11-07 07:52:51,653 WARN L228 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_cc014747-995e-45a1-ab9b-6aad6005d783/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-11-07 07:52:51,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:51,693 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:52:51,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51 WrapperNode [2021-11-07 07:52:51,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:51,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:52:51,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:52:51,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:52:51,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:52:51,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:52:51,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:52:51,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:52:51,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (1/1) ... [2021-11-07 07:52:51,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:51,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:52:51,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:52:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:52:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:52:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:52:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:52:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:52:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:52:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:52:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:52:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:52:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:52:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:52:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:52:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:52:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:52:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:52:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:52:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:52:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:52:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:52:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:52:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:52:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:52:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:52:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:52:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:52:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:52:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:52:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:52:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:52:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:52:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:52:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:52:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:52:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:52:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:52:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:52:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-07 07:52:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:52:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:52:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:52:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:52:51,911 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:52:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:52:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:52:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:52:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:52:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:52:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:52:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-07 07:52:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:52:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:52:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:52:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:52:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:52:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:52:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:52:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:52:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:52:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:52:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:52:52,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:52:52,961 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-07 07:52:52,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:52 BoogieIcfgContainer [2021-11-07 07:52:52,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:52:52,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:52:52,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:52:52,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:52:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:52:51" (1/3) ... [2021-11-07 07:52:52,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af1346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:52, skipping insertion in model container [2021-11-07 07:52:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:51" (2/3) ... [2021-11-07 07:52:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af1346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:52, skipping insertion in model container [2021-11-07 07:52:52,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:52" (3/3) ... [2021-11-07 07:52:52,986 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-11-07 07:52:52,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:52:52,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-07 07:52:53,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:52:53,048 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 [2021-11-07 07:52:53,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-07 07:52:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:52:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:52:53,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:53,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:53,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash -486261088, now seen corresponding path program 1 times [2021-11-07 07:52:53,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:52:53,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101211234] [2021-11-07 07:52:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:53,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:52:53,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:52:53,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:52:53,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:52:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:53,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:52:53,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:53,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:52:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:53,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:52:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:53,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:52:53,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101211234] [2021-11-07 07:52:53,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101211234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:53,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:53,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:52:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055552308] [2021-11-07 07:52:53,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:53,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:52:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:53,448 INFO L87 Difference]: Start difference. First operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:53,790 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-11-07 07:52:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:53,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 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 7 [2021-11-07 07:52:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:53,801 INFO L225 Difference]: With dead ends: 141 [2021-11-07 07:52:53,802 INFO L226 Difference]: Without dead ends: 137 [2021-11-07 07:52:53,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-07 07:52:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-11-07 07:52:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.9027777777777777) internal successors, (137), 129 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-11-07 07:52:53,856 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 7 [2021-11-07 07:52:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:53,856 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-11-07 07:52:53,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-11-07 07:52:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:52:53,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:53,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:53,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:54,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:52:54,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -486261087, now seen corresponding path program 1 times [2021-11-07 07:52:54,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:52:54,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857469701] [2021-11-07 07:52:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:54,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:52:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:52:54,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:52:54,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:52:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:54,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:52:54,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:54,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:52:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:54,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:52:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:54,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:52:54,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857469701] [2021-11-07 07:52:54,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857469701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:54,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:54,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:52:54,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728438167] [2021-11-07 07:52:54,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:54,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:52:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:54,341 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:54,830 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-11-07 07:52:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 7 [2021-11-07 07:52:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:54,833 INFO L225 Difference]: With dead ends: 150 [2021-11-07 07:52:54,833 INFO L226 Difference]: Without dead ends: 150 [2021-11-07 07:52:54,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-07 07:52:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2021-11-07 07:52:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.7848101265822784) internal successors, (141), 133 states have internal predecessors, (141), 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) [2021-11-07 07:52:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2021-11-07 07:52:54,860 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 7 [2021-11-07 07:52:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:54,860 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2021-11-07 07:52:54,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2021-11-07 07:52:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:52:54,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:54,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:54,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:52:55,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877289, now seen corresponding path program 1 times [2021-11-07 07:52:55,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:52:55,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013204214] [2021-11-07 07:52:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:55,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:52:55,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:52:55,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:52:55,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:52:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:55,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:52:55,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:55,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:52:55,332 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 07:52:55,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-07 07:52:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:55,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:52:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:55,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:52:55,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013204214] [2021-11-07 07:52:55,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013204214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:55,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:55,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:52:55,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098559269] [2021-11-07 07:52:55,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:55,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:52:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:55,447 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:55,910 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-11-07 07:52:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:52:55,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 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 12 [2021-11-07 07:52:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:55,913 INFO L225 Difference]: With dead ends: 142 [2021-11-07 07:52:55,913 INFO L226 Difference]: Without dead ends: 142 [2021-11-07 07:52:55,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-07 07:52:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-11-07 07:52:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.6341463414634145) internal successors, (134), 123 states have internal predecessors, (134), 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) [2021-11-07 07:52:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-11-07 07:52:55,924 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 12 [2021-11-07 07:52:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-11-07 07:52:55,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:52:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-11-07 07:52:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:52:55,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:55,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:55,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:56,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:52:56,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:52:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877290, now seen corresponding path program 1 times [2021-11-07 07:52:56,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:52:56,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421364654] [2021-11-07 07:52:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:56,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:52:56,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:52:56,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:52:56,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:52:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:56,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:52:56,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:56,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:52:56,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:52:56,503 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:52:56,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-07 07:52:56,517 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:52:56,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-07 07:52:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:56,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:52:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:59,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:52:59,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421364654] [2021-11-07 07:52:59,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421364654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:59,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:59,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:52:59,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215194954] [2021-11-07 07:52:59,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:52:59,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:52:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:52:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-07 07:52:59,382 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:18,178 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-11-07 07:53:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:53:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 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 12 [2021-11-07 07:53:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:18,180 INFO L225 Difference]: With dead ends: 177 [2021-11-07 07:53:18,180 INFO L226 Difference]: Without dead ends: 177 [2021-11-07 07:53:18,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-11-07 07:53:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-07 07:53:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 122. [2021-11-07 07:53:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 118 states have internal predecessors, (129), 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) [2021-11-07 07:53:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-11-07 07:53:18,191 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 12 [2021-11-07 07:53:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:18,191 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-11-07 07:53:18,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-11-07 07:53:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 07:53:18,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:18,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:18,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:18,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:18,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash -52407454, now seen corresponding path program 1 times [2021-11-07 07:53:18,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:18,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368933398] [2021-11-07 07:53:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:18,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:18,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:18,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:53:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:18,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:53:18,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:18,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:18,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:18,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368933398] [2021-11-07 07:53:18,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368933398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:18,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:18,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:53:18,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869733784] [2021-11-07 07:53:18,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:18,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:18,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:18,757 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:19,207 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-11-07 07:53:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 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 14 [2021-11-07 07:53:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:19,209 INFO L225 Difference]: With dead ends: 148 [2021-11-07 07:53:19,210 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 07:53:19,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 07:53:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-11-07 07:53:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 116 states have internal predecessors, (125), 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) [2021-11-07 07:53:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-11-07 07:53:19,219 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 14 [2021-11-07 07:53:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:19,220 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-11-07 07:53:19,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-11-07 07:53:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:53:19,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:19,222 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:19,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 07:53:19,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:19,434 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480014, now seen corresponding path program 1 times [2021-11-07 07:53:19,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:19,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274243462] [2021-11-07 07:53:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:19,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:19,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:19,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:53:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:19,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:53:19,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:19,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:53:19,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-07 07:53:19,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 07:53:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:19,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:19,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:19,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274243462] [2021-11-07 07:53:19,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274243462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:19,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:19,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:53:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492088280] [2021-11-07 07:53:19,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:53:19,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:53:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:19,817 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:20,561 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-11-07 07:53:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:53:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 15 [2021-11-07 07:53:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:20,563 INFO L225 Difference]: With dead ends: 119 [2021-11-07 07:53:20,563 INFO L226 Difference]: Without dead ends: 119 [2021-11-07 07:53:20,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:53:20,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-07 07:53:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-07 07:53:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 115 states have internal predecessors, (124), 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) [2021-11-07 07:53:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-11-07 07:53:20,583 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 15 [2021-11-07 07:53:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:20,583 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-11-07 07:53:20,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-11-07 07:53:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:53:20,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:20,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:20,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:20,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:20,785 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480013, now seen corresponding path program 1 times [2021-11-07 07:53:20,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:20,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100575613] [2021-11-07 07:53:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:20,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:20,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:20,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:53:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:20,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:53:20,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:20,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:53:21,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 07:53:21,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 07:53:21,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-07 07:53:21,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-07 07:53:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:21,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:21,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:21,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100575613] [2021-11-07 07:53:21,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100575613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:21,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:21,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:53:21,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604662584] [2021-11-07 07:53:21,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:53:21,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:53:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:53:21,509 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:23,297 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-11-07 07:53:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:53:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 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 15 [2021-11-07 07:53:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:23,299 INFO L225 Difference]: With dead ends: 118 [2021-11-07 07:53:23,299 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 07:53:23,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:53:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 07:53:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-11-07 07:53:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 114 states have internal predecessors, (123), 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) [2021-11-07 07:53:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2021-11-07 07:53:23,306 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 15 [2021-11-07 07:53:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:23,306 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2021-11-07 07:53:23,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2021-11-07 07:53:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:53:23,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:23,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:23,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:23,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:23,524 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2101662523, now seen corresponding path program 1 times [2021-11-07 07:53:23,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:23,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367834352] [2021-11-07 07:53:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:23,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:23,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:23,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:53:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:23,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:53:23,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:23,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 07:53:23,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-07 07:53:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:23,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:23,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:23,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367834352] [2021-11-07 07:53:23,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367834352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:23,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:23,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 07:53:23,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793751009] [2021-11-07 07:53:23,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:53:23,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:53:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:23,919 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:24,550 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-11-07 07:53:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:53:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 17 [2021-11-07 07:53:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:24,554 INFO L225 Difference]: With dead ends: 179 [2021-11-07 07:53:24,554 INFO L226 Difference]: Without dead ends: 179 [2021-11-07 07:53:24,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:53:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-07 07:53:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 124. [2021-11-07 07:53:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 120 states have internal predecessors, (130), 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) [2021-11-07 07:53:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-11-07 07:53:24,564 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 17 [2021-11-07 07:53:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:24,565 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-11-07 07:53:24,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-11-07 07:53:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 07:53:24,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:24,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:24,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:24,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:24,774 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -739626508, now seen corresponding path program 1 times [2021-11-07 07:53:24,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:24,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798844274] [2021-11-07 07:53:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:24,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:24,776 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:24,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:53:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:24,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:53:24,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:25,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:53:25,108 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 07:53:25,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-07 07:53:25,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 07:53:25,486 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 07:53:25,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-11-07 07:53:25,683 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 07:53:25,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-11-07 07:53:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:25,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:36,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:36,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798844274] [2021-11-07 07:53:36,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798844274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:36,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:36,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-07 07:53:36,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777485853] [2021-11-07 07:53:36,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:53:36,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:53:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=134, Unknown=3, NotChecked=0, Total=182 [2021-11-07 07:53:36,235 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:39,165 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-11-07 07:53:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:53:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 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 19 [2021-11-07 07:53:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:39,167 INFO L225 Difference]: With dead ends: 145 [2021-11-07 07:53:39,167 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 07:53:39,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=142, Invalid=361, Unknown=3, NotChecked=0, Total=506 [2021-11-07 07:53:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 07:53:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-11-07 07:53:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 119 states have internal predecessors, (129), 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) [2021-11-07 07:53:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-11-07 07:53:39,174 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 19 [2021-11-07 07:53:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:39,175 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-11-07 07:53:39,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-11-07 07:53:39,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 07:53:39,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:39,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:39,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:39,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:53:39,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:53:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash -739626507, now seen corresponding path program 1 times [2021-11-07 07:53:39,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:53:39,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286376490] [2021-11-07 07:53:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:39,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:53:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:53:39,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:53:39,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:53:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:39,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:53:39,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:39,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:53:39,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 07:53:39,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:53:39,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-07 07:53:39,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-07 07:53:39,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 07:53:40,064 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 07:53:40,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-07 07:53:40,104 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-07 07:53:40,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-07 07:53:40,270 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 07:53:40,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-07 07:53:40,289 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 07:53:40,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-11-07 07:53:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:40,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:53:52,632 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset))) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))) is different from false [2021-11-07 07:53:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:53,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:53:53,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286376490] [2021-11-07 07:53:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286376490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:53,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:53,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-07 07:53:53,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974639632] [2021-11-07 07:53:53,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:53:53,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:53:53,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:53:53,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=173, Unknown=2, NotChecked=26, Total=240 [2021-11-07 07:53:53,510 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:54:06,535 WARN L207 SmtUtils]: Spent 12.29 s on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2021-11-07 07:54:13,942 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_main_~end~0.offset)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (bvule .cse1 (select |c_#length| c_main_~end~0.base)) (= |c_main_#t~mem7.offset| (_ bv0 32)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (bvule c_main_~end~0.offset .cse1) (= (select |c_#length| |c_main_#t~mem7.base|) (_ bv12 32)) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) c_main_~end~0.offset)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse5) (_ bv12 32)) (not (= .cse5 c_main_~end~0.base)))) is different from false [2021-11-07 07:54:20,432 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-11-07 07:54:28,197 WARN L207 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2021-11-07 07:54:30,658 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse2) .cse3)) (= (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3) c_main_~end~0.offset)))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-11-07 07:54:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:42,884 INFO L93 Difference]: Finished difference Result 182 states and 195 transitions. [2021-11-07 07:54:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:54:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 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 19 [2021-11-07 07:54:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:42,886 INFO L225 Difference]: With dead ends: 182 [2021-11-07 07:54:42,887 INFO L226 Difference]: Without dead ends: 182 [2021-11-07 07:54:42,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=304, Invalid=1106, Unknown=8, NotChecked=222, Total=1640 [2021-11-07 07:54:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-07 07:54:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 120. [2021-11-07 07:54:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.4) internal successors, (126), 116 states have internal predecessors, (126), 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) [2021-11-07 07:54:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2021-11-07 07:54:42,891 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 19 [2021-11-07 07:54:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:42,892 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2021-11-07 07:54:42,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:54:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2021-11-07 07:54:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 07:54:42,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:42,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:42,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:43,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:54:43,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-11-07 07:54:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1944702492, now seen corresponding path program 1 times [2021-11-07 07:54:43,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:54:43,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20699605] [2021-11-07 07:54:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:43,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:54:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:54:43,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:54:43,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:54:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:54:43,309 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:54:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:54:43,400 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-07 07:54:43,400 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:54:43,401 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:54:43,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-07 07:54:43,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-07 07:54:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-07 07:54:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-07 07:54:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-07 07:54:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-07 07:54:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-07 07:54:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-07 07:54:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-07 07:54:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-07 07:54:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-07 07:54:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-07 07:54:43,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-07 07:54:43,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-07 07:54:43,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-07 07:54:43,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-07 07:54:43,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-07 07:54:43,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-11-07 07:54:43,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-07 07:54:43,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-07 07:54:43,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-11-07 07:54:43,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-07 07:54:43,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-07 07:54:43,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-11-07 07:54:43,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-11-07 07:54:43,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-11-07 07:54:43,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-11-07 07:54:43,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:54:43,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-11-07 07:54:43,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-11-07 07:54:43,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 07:54:43,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-11-07 07:54:43,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-11-07 07:54:43,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-11-07 07:54:43,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-11-07 07:54:43,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-11-07 07:54:43,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-11-07 07:54:43,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-11-07 07:54:43,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-11-07 07:54:43,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-11-07 07:54:43,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-11-07 07:54:43,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-11-07 07:54:43,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-11-07 07:54:43,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-11-07 07:54:43,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 07:54:43,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-11-07 07:54:43,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:43,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:54:43,634 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:43,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:54:43,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:54:43 BoogieIcfgContainer [2021-11-07 07:54:43,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:54:43,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:54:43,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:54:43,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:54:43,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:52" (3/4) ... [2021-11-07 07:54:43,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:54:43,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:54:43,677 INFO L168 Benchmark]: Toolchain (without parser) took 112540.75 ms. Allocated memory was 52.4 MB in the beginning and 96.5 MB in the end (delta: 44.0 MB). Free memory was 28.1 MB in the beginning and 37.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-11-07 07:54:43,677 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:54:43,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.00 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 39.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:54:43,678 INFO L168 Benchmark]: Boogie Preprocessor took 79.94 ms. Allocated memory is still 65.0 MB. Free memory was 39.9 MB in the beginning and 36.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:54:43,679 INFO L168 Benchmark]: RCFGBuilder took 1197.82 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 36.9 MB in the end (delta: -325.2 kB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:54:43,679 INFO L168 Benchmark]: TraceAbstraction took 110695.16 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 36.4 MB in the beginning and 37.4 MB in the end (delta: -993.9 kB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-11-07 07:54:43,679 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 96.5 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:54:43,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 541.00 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 39.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.94 ms. Allocated memory is still 65.0 MB. Free memory was 39.9 MB in the beginning and 36.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1197.82 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 36.9 MB in the end (delta: -325.2 kB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 110695.16 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 36.4 MB in the beginning and 37.4 MB in the end (delta: -993.9 kB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.38 ms. Allocated memory is still 96.5 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={1:0}] [L1007] list->prev = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={1:0}, list={1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1041] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 150 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 110.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 76.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 744 SDtfs, 1405 SDslu, 1621 SDs, 0 SdLazy, 2719 SolverSat, 185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 314 GetRequests, 205 SyntacticMatches, 9 SemanticMatches, 100 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 88.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 254 ConstructedInterpolants, 20 QuantifiedInterpolants, 2202 SizeOfPredicates, 45 NumberOfNonLiveVariables, 900 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 07:54:43,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc014747-995e-45a1-ab9b-6aad6005d783/bin/uautomizer-AkOaLMaTGY/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: UNKNOWN: Overapproximated counterexample