./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:26:38,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:26:38,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:26:38,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:26:38,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:26:38,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:26:38,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:26:38,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:26:38,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:26:38,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:26:38,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:26:38,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:26:38,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:26:38,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:26:38,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:26:38,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:26:38,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:26:38,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:26:38,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:26:38,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:26:38,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:26:38,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:26:38,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:26:38,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:26:38,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:26:38,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:26:38,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:26:38,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:26:38,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:26:38,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:26:38,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:26:38,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:26:38,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:26:38,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:26:38,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:26:38,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:26:38,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:26:38,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:26:38,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:26:38,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:26:38,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:26:38,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 23:26:38,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:26:38,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:26:38,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:26:38,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:26:38,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:26:38,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:26:38,497 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:26:38,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:26:38,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:26:38,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:26:38,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:26:38,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:26:38,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:26:38,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:26:38,500 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:26:38,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:26:38,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:26:38,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:26:38,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:26:38,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:26:38,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:26:38,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:26:38,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:38,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:26:38,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:26:38,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:26:38,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:26:38,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:26:38,503 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_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2021-10-28 23:26:38,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:26:38,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:26:38,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:26:38,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:26:38,857 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:26:38,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-28 23:26:38,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/data/26dda5f32/bfc37a01176e48219063eae1bf11de34/FLAG69e9f2aaa [2021-10-28 23:26:39,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:26:39,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-10-28 23:26:39,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/data/26dda5f32/bfc37a01176e48219063eae1bf11de34/FLAG69e9f2aaa [2021-10-28 23:26:39,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/data/26dda5f32/bfc37a01176e48219063eae1bf11de34 [2021-10-28 23:26:39,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:26:39,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:26:39,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:39,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:26:39,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:26:39,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:39" (1/1) ... [2021-10-28 23:26:39,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8ffe68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:39, skipping insertion in model container [2021-10-28 23:26:39,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:26:39" (1/1) ... [2021-10-28 23:26:39,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:26:39,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:26:40,221 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_f6ee433e-8249-4e88-b4dc-7b0691297a4e/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-28 23:26:40,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:40,244 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:26:40,286 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_f6ee433e-8249-4e88-b4dc-7b0691297a4e/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-10-28 23:26:40,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:26:40,314 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:26:40,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40 WrapperNode [2021-10-28 23:26:40,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:26:40,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:26:40,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:26:40,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:26:40,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:26:40,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:26:40,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:26:40,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:26:40,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (1/1) ... [2021-10-28 23:26:40,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:26:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:40,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:26:40,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:26:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:26:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:26:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:26:40,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:26:40,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:26:40,495 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:26:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2021-10-28 23:26:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:26:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:26:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:26:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:26:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:26:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:26:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:26:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:26:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:26:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:26:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:26:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:26:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:26:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:26:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:26:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:26:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:26:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:26:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:26:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:26:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:26:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:26:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:26:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:26:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:26:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:26:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:26:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:26:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:26:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:26:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:26:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:26:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:26:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:26:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:26:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:26:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:26:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:26:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:26:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:26:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:26:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:26:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:26:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:26:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:26:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:26:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:26:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:26:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:26:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:26:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:26:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:26:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:26:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:26:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:26:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:26:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:26:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:26:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:26:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:26:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:26:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:26:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:26:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:26:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:26:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:26:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:26:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:26:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:26:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:26:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:26:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:26:40,527 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:26:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:26:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:26:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:26:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:26:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:26:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:26:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:26:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:26:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:26:40,884 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:26:41,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:26:41,193 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:26:41,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:41 BoogieIcfgContainer [2021-10-28 23:26:41,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:26:41,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:26:41,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:26:41,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:26:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:26:39" (1/3) ... [2021-10-28 23:26:41,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63353378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:41, skipping insertion in model container [2021-10-28 23:26:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:26:40" (2/3) ... [2021-10-28 23:26:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63353378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:26:41, skipping insertion in model container [2021-10-28 23:26:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:41" (3/3) ... [2021-10-28 23:26:41,206 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-10-28 23:26:41,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:26:41,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-10-28 23:26:41,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:26:41,276 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 [2021-10-28 23:26:41,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-28 23:26:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:26:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:26:41,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:41,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:41,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting dll_createErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2056030063, now seen corresponding path program 1 times [2021-10-28 23:26:41,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:41,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463156135] [2021-10-28 23:26:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:41,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:41,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:41,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463156135] [2021-10-28 23:26:41,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463156135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:41,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:41,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:26:41,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873159977] [2021-10-28 23:26:41,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:26:41,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:26:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:26:41,557 INFO L87 Difference]: Start difference. First operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:41,908 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-10-28 23:26:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:26:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:26:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:41,919 INFO L225 Difference]: With dead ends: 155 [2021-10-28 23:26:41,919 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:26:41,921 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 [2021-10-28 23:26:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:26:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2021-10-28 23:26:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.75) internal successors, (126), 101 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:26:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2021-10-28 23:26:41,964 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 11 [2021-10-28 23:26:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:41,964 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2021-10-28 23:26:41,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2021-10-28 23:26:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:26:41,966 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:41,966 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:41,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:26:41,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting dll_createErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2056030062, now seen corresponding path program 1 times [2021-10-28 23:26:41,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:41,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564338648] [2021-10-28 23:26:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:41,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:42,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:42,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564338648] [2021-10-28 23:26:42,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564338648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:42,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:42,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:26:42,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774598418] [2021-10-28 23:26:42,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:26:42,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:26:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:26:42,064 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:42,374 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-10-28 23:26:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:26:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:26:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:42,376 INFO L225 Difference]: With dead ends: 141 [2021-10-28 23:26:42,376 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 23:26:42,377 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 [2021-10-28 23:26:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 23:26:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 103. [2021-10-28 23:26:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 96 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:26:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-10-28 23:26:42,386 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 11 [2021-10-28 23:26:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:42,387 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-10-28 23:26:42,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2021-10-28 23:26:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:26:42,388 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:42,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:42,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:26:42,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash -683912238, now seen corresponding path program 1 times [2021-10-28 23:26:42,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:42,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267083920] [2021-10-28 23:26:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:42,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:42,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:42,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267083920] [2021-10-28 23:26:42,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267083920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:42,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:42,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:26:42,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317325399] [2021-10-28 23:26:42,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:26:42,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:26:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:26:42,518 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:42,820 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-10-28 23:26:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:26:42,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-10-28 23:26:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:42,822 INFO L225 Difference]: With dead ends: 101 [2021-10-28 23:26:42,823 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 23:26:42,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 23:26:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-10-28 23:26:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 78 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-10-28 23:26:42,830 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 14 [2021-10-28 23:26:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:42,830 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-10-28 23:26:42,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-10-28 23:26:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:26:42,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:42,832 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] [2021-10-28 23:26:42,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:26:42,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dll_createErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:42,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1129091757, now seen corresponding path program 1 times [2021-10-28 23:26:42,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:42,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908131301] [2021-10-28 23:26:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:42,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:42,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908131301] [2021-10-28 23:26:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908131301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:42,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:42,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:26:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257254874] [2021-10-28 23:26:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:26:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:26:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:26:42,913 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:43,049 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-10-28 23:26:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:26:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:26:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:43,051 INFO L225 Difference]: With dead ends: 95 [2021-10-28 23:26:43,051 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 23:26:43,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:26:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 23:26:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-10-28 23:26:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.546875) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-10-28 23:26:43,058 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 20 [2021-10-28 23:26:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:43,059 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-10-28 23:26:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-10-28 23:26:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:26:43,060 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:43,060 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:43,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:26:43,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1531598106, now seen corresponding path program 1 times [2021-10-28 23:26:43,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:43,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327392636] [2021-10-28 23:26:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:43,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:43,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:43,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327392636] [2021-10-28 23:26:43,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327392636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:43,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:43,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:43,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447260065] [2021-10-28 23:26:43,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:26:43,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:26:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:43,243 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:43,582 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-10-28 23:26:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:26:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-10-28 23:26:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:43,584 INFO L225 Difference]: With dead ends: 94 [2021-10-28 23:26:43,584 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 23:26:43,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 23:26:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2021-10-28 23:26:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 82 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-10-28 23:26:43,593 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 26 [2021-10-28 23:26:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:43,593 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-10-28 23:26:43,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-10-28 23:26:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:26:43,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:43,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:43,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:26:43,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1531598105, now seen corresponding path program 1 times [2021-10-28 23:26:43,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:43,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381477305] [2021-10-28 23:26:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:43,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:43,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:43,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381477305] [2021-10-28 23:26:43,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381477305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:43,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097207572] [2021-10-28 23:26:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:43,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:43,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:43,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:26:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:26:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097207572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:44,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:44,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2021-10-28 23:26:44,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730718838] [2021-10-28 23:26:44,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:26:44,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:26:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:44,090 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:44,393 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-10-28 23:26:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:26:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-10-28 23:26:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:44,394 INFO L225 Difference]: With dead ends: 106 [2021-10-28 23:26:44,395 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 23:26:44,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:26:44,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 23:26:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2021-10-28 23:26:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 84 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-10-28 23:26:44,400 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 26 [2021-10-28 23:26:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:44,400 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 23:26:44,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-10-28 23:26:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:26:44,402 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:44,402 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:44,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:44,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 23:26:44,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1306178878, now seen corresponding path program 1 times [2021-10-28 23:26:44,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:44,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371954211] [2021-10-28 23:26:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:44,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:44,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:44,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371954211] [2021-10-28 23:26:44,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371954211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:44,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117812614] [2021-10-28 23:26:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:44,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:44,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:26:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:44,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:26:44,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:44,935 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 [2021-10-28 23:26:44,944 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 [2021-10-28 23:26:45,170 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:26:45,171 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 22 treesize of output 24 [2021-10-28 23:26:45,182 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:26:45,183 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 21 treesize of output 21 [2021-10-28 23:26:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:45,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117812614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:45,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:45,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-28 23:26:45,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341802142] [2021-10-28 23:26:45,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:26:45,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:26:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:26:45,487 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:45,694 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2021-10-28 23:26:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:26:45,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:26:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:45,696 INFO L225 Difference]: With dead ends: 89 [2021-10-28 23:26:45,696 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 23:26:45,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:26:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 23:26:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 23:26:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 83 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2021-10-28 23:26:45,701 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 32 [2021-10-28 23:26:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:45,701 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2021-10-28 23:26:45,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:26:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2021-10-28 23:26:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:26:45,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:45,703 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:45,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:45,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 23:26:45,903 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 773915643, now seen corresponding path program 2 times [2021-10-28 23:26:45,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:45,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230979941] [2021-10-28 23:26:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:45,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:46,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:46,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230979941] [2021-10-28 23:26:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230979941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:46,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767024754] [2021-10-28 23:26:46,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:46,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:46,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:46,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:26:46,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:46,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:46,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:26:46,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:46,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767024754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:46,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:46,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-28 23:26:46,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171410757] [2021-10-28 23:26:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:26:46,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:26:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:46,410 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:26:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:46,806 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2021-10-28 23:26:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-10-28 23:26:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:46,809 INFO L225 Difference]: With dead ends: 117 [2021-10-28 23:26:46,809 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 23:26:46,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:26:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 23:26:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-10-28 23:26:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 96 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-10-28 23:26:46,820 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 38 [2021-10-28 23:26:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:46,821 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-10-28 23:26:46,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 23:26:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-10-28 23:26:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:26:46,827 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:46,827 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:46,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:47,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:26:47,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1265167833, now seen corresponding path program 1 times [2021-10-28 23:26:47,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:47,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272724916] [2021-10-28 23:26:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:47,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:47,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:47,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272724916] [2021-10-28 23:26:47,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272724916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:47,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855552191] [2021-10-28 23:26:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:47,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:47,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:47,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:26:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:26:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:47,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855552191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:47,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:47,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2021-10-28 23:26:47,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559084462] [2021-10-28 23:26:47,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:26:47,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:26:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:26:47,641 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:47,892 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-10-28 23:26:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:26:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-10-28 23:26:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:47,895 INFO L225 Difference]: With dead ends: 130 [2021-10-28 23:26:47,895 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 23:26:47,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:26:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 23:26:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2021-10-28 23:26:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 109 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-10-28 23:26:47,905 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 52 [2021-10-28 23:26:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:47,906 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-10-28 23:26:47,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-10-28 23:26:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 23:26:47,910 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:47,910 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:47,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:48,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:48,126 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash -638876471, now seen corresponding path program 2 times [2021-10-28 23:26:48,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:48,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085097728] [2021-10-28 23:26:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:48,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:48,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:48,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085097728] [2021-10-28 23:26:48,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085097728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:48,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576368056] [2021-10-28 23:26:48,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:26:48,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:48,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:48,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:26:48,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:26:48,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:26:48,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:26:48,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:26:48,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576368056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:48,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:48,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2021-10-28 23:26:48,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274979285] [2021-10-28 23:26:48,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:26:48,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:26:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:48,881 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:49,140 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-10-28 23:26:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:26:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-10-28 23:26:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:49,142 INFO L225 Difference]: With dead ends: 143 [2021-10-28 23:26:49,142 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:26:49,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:26:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:26:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-10-28 23:26:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 122 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2021-10-28 23:26:49,147 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 65 [2021-10-28 23:26:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:49,147 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2021-10-28 23:26:49,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2021-10-28 23:26:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:26:49,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:49,148 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:49,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:49,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:49,349 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1355159193, now seen corresponding path program 3 times [2021-10-28 23:26:49,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:49,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145766799] [2021-10-28 23:26:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:49,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-28 23:26:49,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:49,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145766799] [2021-10-28 23:26:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145766799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:49,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:49,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:26:49,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663978921] [2021-10-28 23:26:49,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:26:49,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:26:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:49,642 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:49,994 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2021-10-28 23:26:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:26:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2021-10-28 23:26:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:49,996 INFO L225 Difference]: With dead ends: 163 [2021-10-28 23:26:49,996 INFO L226 Difference]: Without dead ends: 163 [2021-10-28 23:26:49,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-28 23:26:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2021-10-28 23:26:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 148 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2021-10-28 23:26:50,001 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 78 [2021-10-28 23:26:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:50,002 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2021-10-28 23:26:50,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2021-10-28 23:26:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 23:26:50,003 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:50,003 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:50,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:26:50,004 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr22ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1136298550, now seen corresponding path program 1 times [2021-10-28 23:26:50,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:50,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252082909] [2021-10-28 23:26:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:50,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-28 23:26:50,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:50,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252082909] [2021-10-28 23:26:50,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252082909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:26:50,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:26:50,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:26:50,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568830172] [2021-10-28 23:26:50,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:26:50,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:26:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:26:50,203 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:50,463 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-10-28 23:26:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:26:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2021-10-28 23:26:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:50,465 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:26:50,465 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:26:50,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:26:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:26:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-10-28 23:26:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2686567164179106) internal successors, (170), 148 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-10-28 23:26:50,470 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 82 [2021-10-28 23:26:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:50,470 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-10-28 23:26:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:26:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-10-28 23:26:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:26:50,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:50,472 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:26:50,472 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -22511990, now seen corresponding path program 1 times [2021-10-28 23:26:50,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:50,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975628670] [2021-10-28 23:26:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:50,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:26:50,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:50,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975628670] [2021-10-28 23:26:50,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975628670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:50,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49677761] [2021-10-28 23:26:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:50,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:50,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:50,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:26:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:51,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 23:26:51,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:51,240 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 [2021-10-28 23:26:51,301 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:26:51,301 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 11 treesize of output 11 [2021-10-28 23:26:51,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-10-28 23:26:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 23:26:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-28 23:26:51,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:26:51,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:26:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:51,594 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-10-28 23:26:51,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 27 [2021-10-28 23:26:51,808 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:26:51,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 23:26:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 23:26:51,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49677761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:51,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:51,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 23 [2021-10-28 23:26:51,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792736514] [2021-10-28 23:26:51,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:26:51,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:26:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:26:51,829 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 19 states have internal predecessors, (80), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:52,651 INFO L93 Difference]: Finished difference Result 160 states and 179 transitions. [2021-10-28 23:26:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:26:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 19 states have internal predecessors, (80), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 86 [2021-10-28 23:26:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:52,653 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:26:52,654 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:26:52,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 23:26:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:26:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-10-28 23:26:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 148 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-10-28 23:26:52,659 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 86 [2021-10-28 23:26:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:52,660 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-10-28 23:26:52,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 19 states have internal predecessors, (80), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-10-28 23:26:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-28 23:26:52,663 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:52,663 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:52,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:52,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:26:52,882 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1467603535, now seen corresponding path program 1 times [2021-10-28 23:26:52,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:52,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397303917] [2021-10-28 23:26:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:52,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:26:53,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:53,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397303917] [2021-10-28 23:26:53,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397303917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:53,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408021501] [2021-10-28 23:26:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:53,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:53,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:53,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:26:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:53,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:26:53,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:53,813 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 [2021-10-28 23:26:53,866 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:26:53,866 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 11 treesize of output 11 [2021-10-28 23:26:53,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-10-28 23:26:53,936 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-28 23:26:53,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-28 23:26:53,961 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 23:26:53,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 23:26:53,980 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 23:26:53,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 23:26:54,012 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-28 23:26:54,012 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 33 treesize of output 17 [2021-10-28 23:26:54,138 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 [2021-10-28 23:26:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 23:26:54,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408021501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:54,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:54,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2021-10-28 23:26:54,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814019335] [2021-10-28 23:26:54,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:26:54,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:26:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:26:54,163 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 19 states have internal predecessors, (85), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:54,976 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-10-28 23:26:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:26:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 19 states have internal predecessors, (85), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2021-10-28 23:26:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:54,979 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:26:54,979 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:26:54,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 23:26:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:26:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-10-28 23:26:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 148 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-10-28 23:26:54,986 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 88 [2021-10-28 23:26:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:54,987 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-10-28 23:26:54,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 19 states have internal predecessors, (85), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-10-28 23:26:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-28 23:26:54,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:54,989 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:55,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:55,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 23:26:55,208 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2087514772, now seen corresponding path program 1 times [2021-10-28 23:26:55,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:55,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089191036] [2021-10-28 23:26:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:55,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:26:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:26:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:26:55,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:26:55,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089191036] [2021-10-28 23:26:55,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089191036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:55,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012319142] [2021-10-28 23:26:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:55,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:26:55,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:26:55,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:26:55,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:26:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:26:55,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-28 23:26:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:26:56,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-10-28 23:26:56,202 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:26:56,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-28 23:26:56,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-10-28 23:26:56,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:56,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-28 23:26:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:56,427 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 23:26:56,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-10-28 23:26:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:26:56,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:26:56,802 INFO L354 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2021-10-28 23:26:56,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 24 [2021-10-28 23:26:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 23:26:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012319142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:26:56,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:26:56,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2021-10-28 23:26:56,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080555970] [2021-10-28 23:26:56,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 23:26:56,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:26:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 23:26:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:26:56,862 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 22 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:57,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:26:57,962 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2021-10-28 23:26:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:26:57,962 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 22 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 89 [2021-10-28 23:26:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:26:57,963 INFO L225 Difference]: With dead ends: 143 [2021-10-28 23:26:57,963 INFO L226 Difference]: Without dead ends: 143 [2021-10-28 23:26:57,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=1422, Unknown=0, NotChecked=0, Total=1640 [2021-10-28 23:26:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-28 23:26:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-10-28 23:26:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.25) internal successors, (150), 134 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:26:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2021-10-28 23:26:57,968 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 89 [2021-10-28 23:26:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:26:57,969 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2021-10-28 23:26:57,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 22 states have internal predecessors, (98), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:26:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2021-10-28 23:26:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-28 23:26:57,970 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:26:57,970 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:58,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:26:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:26:58,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-10-28 23:26:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:26:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1619301044, now seen corresponding path program 1 times [2021-10-28 23:26:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:26:58,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217228863] [2021-10-28 23:26:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:26:58,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:26:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:26:58,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:26:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:26:58,363 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:26:58,363 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:26:58,364 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:26:58,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:26:58,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:26:58,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:26:58,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:26:58,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:26:58,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:26:58,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:26:58,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:26:58,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:26:58,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:26:58,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:26:58,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:26:58,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:26:58,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:26:58,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:26:58,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:26:58,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:26:58,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr0REQUIRES_VIOLATION [2021-10-28 23:26:58,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr1REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr2REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr3REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr4REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr5REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr6REQUIRES_VIOLATION [2021-10-28 23:26:58,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr7REQUIRES_VIOLATION [2021-10-28 23:26:58,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr8REQUIRES_VIOLATION [2021-10-28 23:26:58,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr9REQUIRES_VIOLATION [2021-10-28 23:26:58,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr10REQUIRES_VIOLATION [2021-10-28 23:26:58,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr11REQUIRES_VIOLATION [2021-10-28 23:26:58,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:26:58,376 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:26:58,379 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:26:58,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:26:58 BoogieIcfgContainer [2021-10-28 23:26:58,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:26:58,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:26:58,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:26:58,442 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:26:58,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:26:41" (3/4) ... [2021-10-28 23:26:58,444 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:26:58,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:26:58,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:26:58,512 INFO L168 Benchmark]: Toolchain (without parser) took 18699.46 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 63.0 MB in the beginning and 99.4 MB in the end (delta: -36.5 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,512 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:26:58,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.44 ms. Allocated memory is still 94.4 MB. Free memory was 62.8 MB in the beginning and 63.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,513 INFO L168 Benchmark]: Boogie Preprocessor took 88.07 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 61.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,513 INFO L168 Benchmark]: RCFGBuilder took 791.03 ms. Allocated memory is still 94.4 MB. Free memory was 61.1 MB in the beginning and 67.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,514 INFO L168 Benchmark]: TraceAbstraction took 17244.23 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 66.9 MB in the beginning and 104.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,514 INFO L168 Benchmark]: Witness Printer took 69.34 ms. Allocated memory is still 180.4 MB. Free memory was 104.7 MB in the beginning and 99.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:26:58,519 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 73.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.44 ms. Allocated memory is still 94.4 MB. Free memory was 62.8 MB in the beginning and 63.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.07 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 61.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 791.03 ms. Allocated memory is still 94.4 MB. Free memory was 61.1 MB in the beginning and 67.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17244.23 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 66.9 MB in the beginning and 104.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 69.34 ms. Allocated memory is still 180.4 MB. Free memory was 104.7 MB in the beginning and 99.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. 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 - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 VAL [head={-5:0}, head->data_0=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() VAL [head={-5:0}, len=5] - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 109 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 17.1s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1017 SDtfs, 1327 SDslu, 5277 SDs, 0 SdLazy, 5271 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 727 GetRequests, 501 SyntacticMatches, 11 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=11, InterpolantAutomatonStates: 151, 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, 15 MinimizatonAttempts, 176 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1284 NumberOfCodeBlocks, 1284 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1171 ConstructedInterpolants, 18 QuantifiedInterpolants, 5611 SizeOfPredicates, 41 NumberOfNonLiveVariables, 2618 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 983/1339 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 proved your program to be incorrect! [2021-10-28 23:26:58,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ee433e-8249-4e88-b4dc-7b0691297a4e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...