./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/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_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:02:05,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:02:05,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:02:05,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:02:05,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:02:05,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:02:05,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:02:05,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:02:05,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:02:05,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:02:05,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:02:05,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:02:05,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:02:05,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:02:05,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:02:05,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:02:05,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:02:05,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:02:05,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:02:05,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:02:05,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:02:05,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:02:05,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:02:05,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:02:05,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:02:05,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:02:05,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:02:05,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:02:05,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:02:05,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:02:05,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:02:05,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:02:05,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:02:05,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:02:05,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:02:05,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:02:05,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:02:05,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:02:05,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:02:05,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:02:05,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:02:05,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:02:05,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:02:05,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:02:05,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:02:05,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:02:05,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:02:05,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:02:05,327 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:02:05,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:02:05,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:02:05,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:02:05,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:02:05,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:02:05,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:02:05,330 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:02:05,330 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:02:05,330 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:02:05,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:02:05,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:02:05,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:02:05,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:02:05,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:02:05,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:02:05,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:02:05,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:05,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:02:05,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:02:05,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:02:05,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:02:05,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:02:05,336 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_c181aeef-4ae0-4b34-a791-4da6b3b5176e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 [2021-10-28 23:02:05,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:02:05,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:02:05,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:02:05,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:02:05,649 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:02:05,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2021-10-28 23:02:05,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/data/e4aec67e5/be0fcdb33ef74938ad81a69c062954b5/FLAG56b44140c [2021-10-28 23:02:06,239 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:02:06,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2021-10-28 23:02:06,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/data/e4aec67e5/be0fcdb33ef74938ad81a69c062954b5/FLAG56b44140c [2021-10-28 23:02:06,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/data/e4aec67e5/be0fcdb33ef74938ad81a69c062954b5 [2021-10-28 23:02:06,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:02:06,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:02:06,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:06,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:02:06,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:02:06,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:06" (1/1) ... [2021-10-28 23:02:06,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6b2094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:06, skipping insertion in model container [2021-10-28 23:02:06,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:06" (1/1) ... [2021-10-28 23:02:06,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:02:06,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:02:07,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:07,020 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:02:07,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:07,111 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:02:07,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07 WrapperNode [2021-10-28 23:02:07,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:07,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:02:07,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:02:07,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:02:07,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:02:07,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:02:07,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:02:07,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:02:07,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (1/1) ... [2021-10-28 23:02:07,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:07,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:02:07,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:02:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:02:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:02:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:02:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:02:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:02:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:02:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:02:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2021-10-28 23:02:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:02:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:02:07,314 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:02:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:02:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:02:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:02:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:02:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:02:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:02:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:02:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:02:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:02:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:02:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:02:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:02:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:02:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:02:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:02:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:02:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:02:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:02:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:02:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:02:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:02:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:02:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:02:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:02:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:02:07,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:02:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:02:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:02:07,321 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:02:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:02:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:02:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:02:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:02:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:02:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:02:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:02:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:02:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:02:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:02:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:02:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:02:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:02:07,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:02:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:02:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:02:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:02:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:02:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:02:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:02:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:02:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:02:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:02:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:02:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:02:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:02:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:02:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:02:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:02:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:02:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:02:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:02:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:02:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:02:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:02:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:02:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:02:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:02:07,336 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:02:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:02:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:02:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:02:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:02:07,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:02:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:02:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:02:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:02:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:02:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:02:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:02:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:02:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:02:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:02:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:02:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:02:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:02:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:02:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:02:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:02:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:02:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:02:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:02:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:02:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:02:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 23:02:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2021-10-28 23:02:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:02:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:02:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:02:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:02:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:02:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:02:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:02:07,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:02:07,783 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 23:02:07,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:07 BoogieIcfgContainer [2021-10-28 23:02:07,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:02:07,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:02:07,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:02:07,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:02:07,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:02:06" (1/3) ... [2021-10-28 23:02:07,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7979d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:07, skipping insertion in model container [2021-10-28 23:02:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:07" (2/3) ... [2021-10-28 23:02:07,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7979d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:07, skipping insertion in model container [2021-10-28 23:02:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:07" (3/3) ... [2021-10-28 23:02:07,794 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2021-10-28 23:02:07,799 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:02:07,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-28 23:02:07,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:02:07,851 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 23:02:07,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 23:02:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:02:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:02:07,886 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:07,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:07,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2021-10-28 23:02:07,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:07,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908659396] [2021-10-28 23:02:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:07,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,113 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 23:02:08,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:08,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908659396] [2021-10-28 23:02:08,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908659396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:08,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:08,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:02:08,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724861302] [2021-10-28 23:02:08,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:08,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:08,140 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:08,279 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-28 23:02:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:08,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:02:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:08,301 INFO L225 Difference]: With dead ends: 33 [2021-10-28 23:02:08,301 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 23:02:08,303 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 23:02:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 23:02:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-28 23:02:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 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 23:02:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-28 23:02:08,342 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2021-10-28 23:02:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:08,344 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-28 23:02:08,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-28 23:02:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:02:08,345 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:08,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:08,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:02:08,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2021-10-28 23:02:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:08,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054811184] [2021-10-28 23:02:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:08,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,557 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 23:02:08,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:08,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054811184] [2021-10-28 23:02:08,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054811184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:08,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:08,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:02:08,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893551086] [2021-10-28 23:02:08,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:02:08,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:02:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:02:08,561 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:08,673 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-28 23:02:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:02:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:02:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:08,675 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:02:08,675 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 23:02:08,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:02:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 23:02:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-10-28 23:02:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 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 23:02:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-10-28 23:02:08,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2021-10-28 23:02:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:08,682 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-10-28 23:02:08,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-10-28 23:02:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:02:08,684 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:08,684 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:08,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:02:08,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2021-10-28 23:02:08,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:08,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984625213] [2021-10-28 23:02:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:08,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:08,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:08,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984625213] [2021-10-28 23:02:08,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984625213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:08,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988873160] [2021-10-28 23:02:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:08,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:08,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:08,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:02:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:08,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:02:08,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:09,076 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 23:02:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:09,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988873160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:09,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:09,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-28 23:02:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554789354] [2021-10-28 23:02:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:02:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:02:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:02:09,245 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 23:02:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:09,369 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-28 23:02:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:02:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 15 [2021-10-28 23:02:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:09,371 INFO L225 Difference]: With dead ends: 33 [2021-10-28 23:02:09,371 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 23:02:09,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:02:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 23:02:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-28 23:02:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 24 states have internal predecessors, (30), 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 23:02:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-28 23:02:09,376 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2021-10-28 23:02:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:09,377 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-28 23:02:09,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 23:02:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-28 23:02:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:02:09,378 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:09,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:09,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:09,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:09,604 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting cmemrchrErr0REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2021-10-28 23:02:09,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:09,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193101577] [2021-10-28 23:02:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:09,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:09,734 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 23:02:09,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:09,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193101577] [2021-10-28 23:02:09,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193101577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:09,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:09,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:02:09,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629715504] [2021-10-28 23:02:09,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:02:09,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:02:09,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:02:09,740 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:09,934 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-10-28 23:02:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:02:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:02:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:09,939 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:02:09,940 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 23:02:09,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:02:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 23:02:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-28 23:02:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 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 23:02:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-10-28 23:02:09,955 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2021-10-28 23:02:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:09,955 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-10-28 23:02:09,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-28 23:02:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:02:09,957 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:09,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:09,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:02:09,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2021-10-28 23:02:09,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:09,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369486790] [2021-10-28 23:02:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:09,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:10,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:10,194 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 23:02:10,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:10,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369486790] [2021-10-28 23:02:10,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369486790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:10,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:10,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:02:10,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317420642] [2021-10-28 23:02:10,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:02:10,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:02:10,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:02:10,199 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:10,527 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-28 23:02:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:02:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:02:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:10,529 INFO L225 Difference]: With dead ends: 35 [2021-10-28 23:02:10,529 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 23:02:10,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:02:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 23:02:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-10-28 23:02:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 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 23:02:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-28 23:02:10,533 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2021-10-28 23:02:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:10,533 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 23:02:10,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-28 23:02:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:02:10,534 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:10,535 INFO L513 BasicCegarLoop]: trace histogram [2, 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 23:02:10,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:02:10,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2021-10-28 23:02:10,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:10,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981726268] [2021-10-28 23:02:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:10,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:10,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:10,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981726268] [2021-10-28 23:02:10,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981726268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:10,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256697301] [2021-10-28 23:02:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:10,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:10,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:10,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:02:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:10,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:02:10,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:10,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256697301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:10,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:10,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-10-28 23:02:10,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897750071] [2021-10-28 23:02:10,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:02:10,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:02:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:02:10,995 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:11,252 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-28 23:02:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:02:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:02:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:11,253 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:02:11,254 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:02:11,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:02:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:02:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2021-10-28 23:02:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:02:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-10-28 23:02:11,259 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2021-10-28 23:02:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:11,260 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-10-28 23:02:11,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-10-28 23:02:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:02:11,261 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:11,261 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:11,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:11,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:11,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2021-10-28 23:02:11,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:11,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320303417] [2021-10-28 23:02:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:11,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 23:02:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:02:11,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:11,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320303417] [2021-10-28 23:02:11,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320303417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:11,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:11,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:11,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572642973] [2021-10-28 23:02:11,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:02:11,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:11,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:02:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:02:11,615 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:02:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:11,688 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-10-28 23:02:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-10-28 23:02:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:11,691 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:02:11,691 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 23:02:11,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:02:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 23:02:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 23:02:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-28 23:02:11,705 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2021-10-28 23:02:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-28 23:02:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:02:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-28 23:02:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:02:11,706 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:11,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:11,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:02:11,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2021-10-28 23:02:11,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:11,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835975235] [2021-10-28 23:02:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:11,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:11,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:11,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835975235] [2021-10-28 23:02:11,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835975235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:11,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769188274] [2021-10-28 23:02:11,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:02:11,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:11,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:11,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:02:12,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:02:12,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:12,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 23:02:12,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:02:12,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769188274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:12,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:12,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 20 [2021-10-28 23:02:12,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647155000] [2021-10-28 23:02:12,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 23:02:12,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:12,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:02:12,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:02:12,512 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:13,260 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-28 23:02:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:02:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:02:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:13,262 INFO L225 Difference]: With dead ends: 40 [2021-10-28 23:02:13,262 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:02:13,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 23:02:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:02:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-28 23:02:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 23:02:13,267 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 28 [2021-10-28 23:02:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:13,267 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 23:02:13,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 23:02:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:02:13,268 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:13,268 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:13,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:02:13,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1228806591, now seen corresponding path program 3 times [2021-10-28 23:02:13,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:13,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012634830] [2021-10-28 23:02:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:13,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:13,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:13,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012634830] [2021-10-28 23:02:13,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012634830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:13,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444073411] [2021-10-28 23:02:13,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:02:13,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:13,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:13,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:13,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:02:13,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:02:13,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:13,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:02:13,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:14,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444073411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:14,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:14,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 19 [2021-10-28 23:02:14,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072982671] [2021-10-28 23:02:14,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:02:14,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:02:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:02:14,084 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:14,338 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-28 23:02:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:02:14,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-10-28 23:02:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:14,339 INFO L225 Difference]: With dead ends: 61 [2021-10-28 23:02:14,339 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 23:02:14,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:02:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 23:02:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-10-28 23:02:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-10-28 23:02:14,343 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2021-10-28 23:02:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:14,343 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-10-28 23:02:14,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-10-28 23:02:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 23:02:14,344 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:14,344 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:14,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:14,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:14,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 446111132, now seen corresponding path program 4 times [2021-10-28 23:02:14,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:14,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432320104] [2021-10-28 23:02:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:14,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:14,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:14,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432320104] [2021-10-28 23:02:14,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432320104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:14,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422992711] [2021-10-28 23:02:14,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:02:14,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:14,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:02:14,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:02:14,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:14,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 23:02:14,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:15,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422992711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:15,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:15,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 27 [2021-10-28 23:02:15,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665699703] [2021-10-28 23:02:15,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-28 23:02:15,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-28 23:02:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:02:15,465 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:16,330 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-28 23:02:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:02:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-10-28 23:02:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:16,333 INFO L225 Difference]: With dead ends: 68 [2021-10-28 23:02:16,333 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:02:16,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2021-10-28 23:02:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:02:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-10-28 23:02:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-10-28 23:02:16,346 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2021-10-28 23:02:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:16,346 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-10-28 23:02:16,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-10-28 23:02:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 23:02:16,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:16,351 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:16,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:16,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:02:16,552 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash -840897799, now seen corresponding path program 5 times [2021-10-28 23:02:16,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:16,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559795029] [2021-10-28 23:02:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:16,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:16,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:16,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559795029] [2021-10-28 23:02:16,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559795029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:16,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703450535] [2021-10-28 23:02:16,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:02:16,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:16,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:16,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:16,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:02:17,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-28 23:02:17,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:17,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 23:02:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:17,062 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 23:02:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:17,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703450535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:17,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:17,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2021-10-28 23:02:17,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738885128] [2021-10-28 23:02:17,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:02:17,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:17,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:02:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:02:17,584 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:18,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:18,067 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-10-28 23:02:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:02:18,067 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-10-28 23:02:18,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:18,068 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:02:18,068 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 23:02:18,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:02:18,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 23:02:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-10-28 23:02:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2021-10-28 23:02:18,073 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 46 [2021-10-28 23:02:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2021-10-28 23:02:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2021-10-28 23:02:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:02:18,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:18,075 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:18,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-28 23:02:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 23:02:18,284 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -762817119, now seen corresponding path program 6 times [2021-10-28 23:02:18,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:18,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818936262] [2021-10-28 23:02:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:18,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:18,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:18,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818936262] [2021-10-28 23:02:18,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818936262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:18,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584802580] [2021-10-28 23:02:18,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:02:18,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:18,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:02:18,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-28 23:02:18,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:02:18,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:19,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584802580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:19,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:19,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-10-28 23:02:19,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041958337] [2021-10-28 23:02:19,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 23:02:19,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 23:02:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:02:19,153 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:19,510 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-28 23:02:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:02:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-10-28 23:02:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:19,511 INFO L225 Difference]: With dead ends: 82 [2021-10-28 23:02:19,511 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 23:02:19,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:02:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 23:02:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-28 23:02:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-28 23:02:19,516 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2021-10-28 23:02:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:19,516 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-28 23:02:19,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-28 23:02:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 23:02:19,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:19,517 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:19,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:19,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:19,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1336099044, now seen corresponding path program 7 times [2021-10-28 23:02:19,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:19,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319090935] [2021-10-28 23:02:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:19,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:20,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:20,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319090935] [2021-10-28 23:02:20,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319090935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:20,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585337988] [2021-10-28 23:02:20,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:02:20,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:20,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:20,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:02:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:20,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-28 23:02:20,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 40 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:20,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585337988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:20,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:20,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2021-10-28 23:02:20,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278084666] [2021-10-28 23:02:20,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-28 23:02:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-28 23:02:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:02:20,988 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 28 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:21,648 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-10-28 23:02:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:02:21,649 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-10-28 23:02:21,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:21,649 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:02:21,649 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 23:02:21,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1283, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 23:02:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 23:02:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-10-28 23:02:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 23:02:21,655 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 55 [2021-10-28 23:02:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:21,656 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 23:02:21,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 23:02:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 23:02:21,657 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:21,657 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:21,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:21,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:02:21,864 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:21,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1225393514, now seen corresponding path program 8 times [2021-10-28 23:02:21,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:21,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418289543] [2021-10-28 23:02:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:21,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:22,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:22,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418289543] [2021-10-28 23:02:22,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418289543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:22,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751555863] [2021-10-28 23:02:22,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:02:22,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:22,213 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:22,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:02:22,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:02:22,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 23:02:22,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 10 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:22,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751555863] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:22,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:22,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-10-28 23:02:22,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760350083] [2021-10-28 23:02:22,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:02:22,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:02:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:02:22,883 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:23,406 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2021-10-28 23:02:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:02:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-10-28 23:02:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:23,407 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:02:23,408 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 23:02:23,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:02:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 23:02:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-10-28 23:02:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-10-28 23:02:23,413 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 60 [2021-10-28 23:02:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:23,413 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-10-28 23:02:23,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-10-28 23:02:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 23:02:23,415 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:23,415 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:23,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:23,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:23,640 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:02:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1322513741, now seen corresponding path program 9 times [2021-10-28 23:02:23,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:23,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786705102] [2021-10-28 23:02:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:23,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:02:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 28 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:23,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:23,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786705102] [2021-10-28 23:02:23,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786705102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:23,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819841538] [2021-10-28 23:02:23,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:02:23,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:02:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:23,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:02:23,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:02:24,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 23:02:24,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:02:24,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-28 23:02:24,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:02:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-28 23:02:24,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819841538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:02:24,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:02:24,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 28 [2021-10-28 23:02:24,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477697355] [2021-10-28 23:02:24,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 23:02:24,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 23:02:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-28 23:02:24,785 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:26,493 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-10-28 23:02:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-28 23:02:26,493 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-10-28 23:02:26,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:26,494 INFO L225 Difference]: With dead ends: 70 [2021-10-28 23:02:26,494 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:02:26,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=435, Invalid=2871, Unknown=0, NotChecked=0, Total=3306 [2021-10-28 23:02:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:02:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:02:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:02:26,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2021-10-28 23:02:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:26,496 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:02:26,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.892857142857143) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:02:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:02:26,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:02:26,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemrchrErr0REQUIRES_VIOLATION [2021-10-28 23:02:26,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemrchrErr1REQUIRES_VIOLATION [2021-10-28 23:02:26,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:02:26,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:02:26,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:02:26,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:02:26,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:02:26,704 INFO L731 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:26,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:26,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:26 BoogieIcfgContainer [2021-10-28 23:02:26,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:26,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:26,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:26,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:26,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:07" (3/4) ... [2021-10-28 23:02:26,721 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:02:26,728 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 23:02:26,728 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2021-10-28 23:02:26,728 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-28 23:02:26,729 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-28 23:02:26,729 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-28 23:02:26,729 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-28 23:02:26,729 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 23:02:26,729 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-28 23:02:26,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-28 23:02:26,735 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-28 23:02:26,735 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:02:26,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:02:26,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:26,796 INFO L168 Benchmark]: Toolchain (without parser) took 20220.46 ms. Allocated memory was 77.6 MB in the beginning and 127.9 MB in the end (delta: 50.3 MB). Free memory was 40.7 MB in the beginning and 65.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,796 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.0 MB in the beginning and 57.9 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:26,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.87 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 75.9 MB in the end (delta: -35.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,798 INFO L168 Benchmark]: Boogie Preprocessor took 102.67 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 73.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,798 INFO L168 Benchmark]: RCFGBuilder took 568.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.4 MB in the beginning and 55.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,799 INFO L168 Benchmark]: TraceAbstraction took 18925.98 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 68.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,799 INFO L168 Benchmark]: Witness Printer took 80.78 ms. Allocated memory is still 127.9 MB. Free memory was 68.1 MB in the beginning and 65.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:26,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 58.0 MB in the beginning and 57.9 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.87 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 75.9 MB in the end (delta: -35.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.67 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 73.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 568.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.4 MB in the beginning and 55.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18925.98 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 68.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 80.78 ms. Allocated memory is still 127.9 MB. Free memory was 68.1 MB in the beginning and 65.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 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 - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 18.8s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 321 SDtfs, 809 SDslu, 1116 SDs, 0 SdLazy, 5231 SolverSat, 306 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 720 GetRequests, 377 SyntacticMatches, 12 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=14, InterpolantAutomatonStates: 211, 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, 38 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 930 NumberOfCodeBlocks, 918 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 6117 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1851 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 323/1013 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:02:26,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c181aeef-4ae0-4b34-a791-4da6b3b5176e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...