./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/realloc1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/realloc1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer --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 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:27:41,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:27:41,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:27:41,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:27:41,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:27:41,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:27:41,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:27:41,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:27:41,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:27:41,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:27:41,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:27:41,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:27:41,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:27:41,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:27:41,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:27:41,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:27:41,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:27:41,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:27:41,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:27:41,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:27:41,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:27:41,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:27:41,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:27:41,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:27:41,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:27:41,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:27:41,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:27:41,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:27:41,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:27:41,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:27:41,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:27:41,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:27:41,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:27:41,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:27:41,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:27:41,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:27:41,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:27:41,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:27:41,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:27:41,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:27:41,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:27:41,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 20:27:41,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:27:41,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:27:41,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:27:41,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:27:41,392 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:27:41,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:27:41,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:27:41,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:27:41,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:27:41,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:27:41,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:27:41,395 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 20:27:41,395 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 20:27:41,396 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 20:27:41,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:27:41,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 20:27:41,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:27:41,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:27:41,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:27:41,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:27:41,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:27:41,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:27:41,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:27:41,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:27:41,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:27:41,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:27:41,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:27:41,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:27:41,400 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-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 [2020-11-29 20:27:41,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:27:41,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:27:41,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:27:41,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:27:41,867 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:27:41,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-11-29 20:27:41,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/data/fc8747083/9eb7f7856f5642d7ad511eb9361baeec/FLAG80f546b57 [2020-11-29 20:27:42,639 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:27:42,642 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/sv-benchmarks/c/memsafety-ext3/realloc1.c [2020-11-29 20:27:42,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/data/fc8747083/9eb7f7856f5642d7ad511eb9361baeec/FLAG80f546b57 [2020-11-29 20:27:42,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/data/fc8747083/9eb7f7856f5642d7ad511eb9361baeec [2020-11-29 20:27:42,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:27:42,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 20:27:42,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:27:42,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:27:43,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:27:43,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:42" (1/1) ... [2020-11-29 20:27:43,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345e0b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43, skipping insertion in model container [2020-11-29 20:27:43,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:42" (1/1) ... [2020-11-29 20:27:43,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:27:43,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:27:43,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:27:43,320 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:27:43,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:27:43,355 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:27:43,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43 WrapperNode [2020-11-29 20:27:43,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:27:43,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:27:43,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:27:43,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:27:43,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... [2020-11-29 20:27:43,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:27:43,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:27:43,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:27:43,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:27:43,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:27:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 20:27:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:27:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 20:27:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2020-11-29 20:27:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 20:27:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 20:27:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 20:27:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-29 20:27:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 20:27:43,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:27:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2020-11-29 20:27:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:27:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:27:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:27:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 20:27:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:27:43,971 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:27:43,972 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 20:27:43,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:43 BoogieIcfgContainer [2020-11-29 20:27:43,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:27:43,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:27:43,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:27:43,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:27:43,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:27:42" (1/3) ... [2020-11-29 20:27:43,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a937889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:43, skipping insertion in model container [2020-11-29 20:27:43,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:43" (2/3) ... [2020-11-29 20:27:43,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a937889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:43, skipping insertion in model container [2020-11-29 20:27:43,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:43" (3/3) ... [2020-11-29 20:27:43,986 INFO L111 eAbstractionObserver]: Analyzing ICFG realloc1.c [2020-11-29 20:27:44,000 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:27:44,005 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 20:27:44,020 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 20:27:44,045 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:27:44,046 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 20:27:44,046 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:27:44,046 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:27:44,046 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:27:44,046 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:27:44,047 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:27:44,047 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:27:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 20:27:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:27:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:44,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:44,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:44,100 INFO L82 PathProgramCache]: Analyzing trace with hash 604141221, now seen corresponding path program 1 times [2020-11-29 20:27:44,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:44,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242721673] [2020-11-29 20:27:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:44,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242721673] [2020-11-29 20:27:44,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:44,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:27:44,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354289621] [2020-11-29 20:27:44,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:27:44,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:44,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:27:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:27:44,370 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-11-29 20:27:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:44,532 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-29 20:27:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:27:44,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:27:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:44,543 INFO L225 Difference]: With dead ends: 39 [2020-11-29 20:27:44,544 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 20:27:44,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:27:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 20:27:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-11-29 20:27:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:27:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-29 20:27:44,588 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-11-29 20:27:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:44,589 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-29 20:27:44,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:27:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-29 20:27:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:27:44,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:44,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:44,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:27:44,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash 604141275, now seen corresponding path program 1 times [2020-11-29 20:27:44,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:44,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969763543] [2020-11-29 20:27:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:44,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969763543] [2020-11-29 20:27:44,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:27:44,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633690608] [2020-11-29 20:27:44,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:27:44,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:27:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:27:44,696 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-11-29 20:27:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:44,880 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-11-29 20:27:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:27:44,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:27:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:44,882 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:27:44,882 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:27:44,883 INFO L677 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 [2020-11-29 20:27:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:27:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-11-29 20:27:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 20:27:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-29 20:27:44,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 8 [2020-11-29 20:27:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:44,890 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-29 20:27:44,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:27:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-29 20:27:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:27:44,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:44,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:44,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:27:44,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash 604141276, now seen corresponding path program 1 times [2020-11-29 20:27:44,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:44,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682627210] [2020-11-29 20:27:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:44,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682627210] [2020-11-29 20:27:44,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:44,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:27:44,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809598587] [2020-11-29 20:27:44,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:27:44,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:44,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:27:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:27:44,993 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-11-29 20:27:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:45,119 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-29 20:27:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:27:45,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:27:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:45,123 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:27:45,123 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:27:45,123 INFO L677 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 [2020-11-29 20:27:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:27:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-29 20:27:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:27:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-29 20:27:45,129 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 8 [2020-11-29 20:27:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:45,130 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-29 20:27:45,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:27:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-29 20:27:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:27:45,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:45,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:45,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:27:45,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash -572402136, now seen corresponding path program 1 times [2020-11-29 20:27:45,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:45,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362148326] [2020-11-29 20:27:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:27:45,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362148326] [2020-11-29 20:27:45,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:45,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:27:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798802744] [2020-11-29 20:27:45,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:27:45,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:27:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:27:45,236 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2020-11-29 20:27:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:45,375 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-11-29 20:27:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:27:45,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 20:27:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:45,378 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:27:45,378 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:27:45,378 INFO L677 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 [2020-11-29 20:27:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:27:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-11-29 20:27:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 20:27:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-29 20:27:45,387 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 12 [2020-11-29 20:27:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:45,388 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-29 20:27:45,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:27:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-29 20:27:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:27:45,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:45,393 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:45,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:27:45,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:45,395 INFO L82 PathProgramCache]: Analyzing trace with hash -572402081, now seen corresponding path program 1 times [2020-11-29 20:27:45,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:45,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137766866] [2020-11-29 20:27:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:45,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137766866] [2020-11-29 20:27:45,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298713850] [2020-11-29 20:27:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:45,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:27:45,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:45,731 INFO L384 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 [2020-11-29 20:27:45,731 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 20:27:45,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 20:27:45,747 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 20:27:45,747 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 20:27:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:45,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:45,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-11-29 20:27:45,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130393256] [2020-11-29 20:27:45,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:27:45,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:27:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:27:45,785 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2020-11-29 20:27:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:45,978 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-29 20:27:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:27:45,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-29 20:27:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:45,981 INFO L225 Difference]: With dead ends: 37 [2020-11-29 20:27:45,981 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:27:45,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:27:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:27:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-29 20:27:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 20:27:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-11-29 20:27:45,995 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 12 [2020-11-29 20:27:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:45,996 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-11-29 20:27:45,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:27:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-29 20:27:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:27:45,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:45,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:46,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:46,224 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1487393457, now seen corresponding path program 1 times [2020-11-29 20:27:46,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:46,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938256013] [2020-11-29 20:27:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:46,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938256013] [2020-11-29 20:27:46,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742967373] [2020-11-29 20:27:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:46,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:27:46,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:46,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:46,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-11-29 20:27:46,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535250455] [2020-11-29 20:27:46,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:27:46,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:46,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:27:46,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:27:46,478 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2020-11-29 20:27:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:46,604 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-11-29 20:27:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:27:46,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-29 20:27:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:46,605 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:27:46,605 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 20:27:46,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:27:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 20:27:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-11-29 20:27:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:27:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-29 20:27:46,612 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2020-11-29 20:27:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:46,612 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-29 20:27:46,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:27:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-29 20:27:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:27:46,613 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:46,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:46,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:46,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 304700076, now seen corresponding path program 2 times [2020-11-29 20:27:46,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:46,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068668738] [2020-11-29 20:27:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:46,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068668738] [2020-11-29 20:27:46,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996850208] [2020-11-29 20:27:46,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:47,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:27:47,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:47,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:27:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-29 20:27:47,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:27:47,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2020-11-29 20:27:47,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809940399] [2020-11-29 20:27:47,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:27:47,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:47,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:27:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:27:47,090 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 3 states. [2020-11-29 20:27:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:47,126 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-29 20:27:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:27:47,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 20:27:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:47,128 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:27:47,128 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:27:47,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:27:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:27:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-11-29 20:27:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:27:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-29 20:27:47,134 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 25 [2020-11-29 20:27:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:47,134 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-29 20:27:47,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:27:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-29 20:27:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:27:47,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:47,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:47,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:47,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:47,349 INFO L82 PathProgramCache]: Analyzing trace with hash 758998927, now seen corresponding path program 1 times [2020-11-29 20:27:47,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:47,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228329256] [2020-11-29 20:27:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:47,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228329256] [2020-11-29 20:27:47,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319899975] [2020-11-29 20:27:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:47,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:27:47,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:47,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:47,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-11-29 20:27:47,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584388374] [2020-11-29 20:27:47,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:27:47,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:27:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:27:47,640 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2020-11-29 20:27:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:47,768 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-11-29 20:27:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:27:47,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-11-29 20:27:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:47,771 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:27:47,771 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 20:27:47,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:27:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 20:27:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-11-29 20:27:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 20:27:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-11-29 20:27:47,785 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 27 [2020-11-29 20:27:47,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:47,786 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-11-29 20:27:47,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:27:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-29 20:27:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:27:47,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:47,788 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:47,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:48,000 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash 660364076, now seen corresponding path program 2 times [2020-11-29 20:27:48,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:48,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332975011] [2020-11-29 20:27:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:48,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332975011] [2020-11-29 20:27:48,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860200275] [2020-11-29 20:27:48,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:48,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:27:48,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:48,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:27:48,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:48,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:48,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-11-29 20:27:48,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67560084] [2020-11-29 20:27:48,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:27:48,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:27:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:27:48,268 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 10 states. [2020-11-29 20:27:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:48,376 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-29 20:27:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:27:48,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-11-29 20:27:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:48,377 INFO L225 Difference]: With dead ends: 48 [2020-11-29 20:27:48,377 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 20:27:48,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:27:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 20:27:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-11-29 20:27:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 20:27:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-11-29 20:27:48,383 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 31 [2020-11-29 20:27:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:48,387 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-11-29 20:27:48,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:27:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-11-29 20:27:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 20:27:48,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:48,389 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:48,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:48,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1265514569, now seen corresponding path program 3 times [2020-11-29 20:27:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:48,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949641470] [2020-11-29 20:27:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:48,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949641470] [2020-11-29 20:27:48,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737109985] [2020-11-29 20:27:48,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:48,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-11-29 20:27:48,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:48,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:27:48,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:48,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:48,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2020-11-29 20:27:48,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273198698] [2020-11-29 20:27:48,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:27:48,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:27:48,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:27:48,943 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 11 states. [2020-11-29 20:27:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:49,076 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-11-29 20:27:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:27:49,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-11-29 20:27:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:49,078 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:27:49,078 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 20:27:49,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:27:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 20:27:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-11-29 20:27:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:27:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-11-29 20:27:49,090 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 35 [2020-11-29 20:27:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:49,091 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-11-29 20:27:49,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:27:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-11-29 20:27:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 20:27:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:49,094 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:49,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:49,316 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash 719470310, now seen corresponding path program 4 times [2020-11-29 20:27:49,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:49,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341209724] [2020-11-29 20:27:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:49,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341209724] [2020-11-29 20:27:49,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63143784] [2020-11-29 20:27:49,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:49,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:27:49,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:49,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:27:49,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:49,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:49,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2020-11-29 20:27:49,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019529995] [2020-11-29 20:27:49,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:27:49,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:49,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:27:49,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:27:49,690 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 12 states. [2020-11-29 20:27:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:49,845 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-11-29 20:27:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:27:49,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-11-29 20:27:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:49,846 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:27:49,846 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 20:27:49,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:27:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 20:27:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-11-29 20:27:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 20:27:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-11-29 20:27:49,853 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 39 [2020-11-29 20:27:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:49,853 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-11-29 20:27:49,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:27:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-11-29 20:27:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 20:27:49,865 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:49,865 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:50,080 INFO L429 AbstractCegarLoop]: === Iteration 12 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1920487677, now seen corresponding path program 5 times [2020-11-29 20:27:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:50,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983176203] [2020-11-29 20:27:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:50,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983176203] [2020-11-29 20:27:50,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093806149] [2020-11-29 20:27:50,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:50,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-11-29 20:27:50,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:27:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:50,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:50,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2020-11-29 20:27:50,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655393298] [2020-11-29 20:27:50,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:27:50,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:27:50,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:27:50,634 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 13 states. [2020-11-29 20:27:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:50,789 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-11-29 20:27:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:27:50,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-11-29 20:27:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:50,791 INFO L225 Difference]: With dead ends: 60 [2020-11-29 20:27:50,791 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 20:27:50,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:27:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 20:27:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-11-29 20:27:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 20:27:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-11-29 20:27:50,798 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 43 [2020-11-29 20:27:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:50,798 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-11-29 20:27:50,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:27:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-11-29 20:27:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-29 20:27:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:50,805 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:51,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 20:27:51,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:51,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1099810976, now seen corresponding path program 6 times [2020-11-29 20:27:51,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:51,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196342369] [2020-11-29 20:27:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 20:27:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:51,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196342369] [2020-11-29 20:27:51,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355329188] [2020-11-29 20:27:51,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:51,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-29 20:27:51,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:27:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:27:51,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:27:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:51,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:27:51,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-11-29 20:27:51,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668933833] [2020-11-29 20:27:51,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 20:27:51,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:51,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 20:27:51,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:27:51,351 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 14 states. [2020-11-29 20:27:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:51,509 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-11-29 20:27:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:27:51,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-11-29 20:27:51,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:51,510 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:27:51,510 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 20:27:51,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:27:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 20:27:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-29 20:27:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-29 20:27:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-11-29 20:27:51,526 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 47 [2020-11-29 20:27:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:51,527 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-11-29 20:27:51,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 20:27:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-11-29 20:27:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 20:27:51,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:51,529 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:51,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:27:51,730 INFO L429 AbstractCegarLoop]: === Iteration 14 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2020-11-29 20:27:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash -343684163, now seen corresponding path program 7 times [2020-11-29 20:27:51,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:51,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552727601] [2020-11-29 20:27:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:27:51,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:27:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:27:51,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:27:51,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:27:51,845 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:27:51,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 20:27:51,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:27:51 BoogieIcfgContainer [2020-11-29 20:27:51,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:27:51,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:27:51,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:27:51,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:27:51,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:43" (3/4) ... [2020-11-29 20:27:51,922 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:27:52,014 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9f1b2625-3768-4555-a9ec-b9381d51ec50/bin/uautomizer/witness.graphml [2020-11-29 20:27:52,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:27:52,019 INFO L168 Benchmark]: Toolchain (without parser) took 9022.32 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 55.0 MB in the beginning and 69.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,020 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:27:52,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.74 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,022 INFO L168 Benchmark]: Boogie Preprocessor took 63.64 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,024 INFO L168 Benchmark]: RCFGBuilder took 551.76 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 51.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,025 INFO L168 Benchmark]: TraceAbstraction took 7941.08 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 51.3 MB in the beginning and 72.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,025 INFO L168 Benchmark]: Witness Printer took 100.42 ms. Allocated memory is still 132.1 MB. Free memory was 72.7 MB in the beginning and 69.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:52,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.74 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.64 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 551.76 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 51.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7941.08 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 51.3 MB in the beginning and 72.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 100.42 ms. Allocated memory is still 132.1 MB. Free memory was 72.7 MB in the beginning and 69.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; VAL [i=0, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-1, i=0, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=1, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-2, i=1, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=2, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-3, i=2, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=3, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-4, i=3, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=4, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-5, i=4, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=5, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-6, i=5, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=6, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-7, i=6, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=7, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-8, i=7, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=8, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=-9, i=8, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=9, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=10, i=9, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] i++ VAL [i=10, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L10] COND FALSE !(i < 10) VAL [i=10, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L14] free(p) VAL [i=10, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L14] free(p) VAL [i=10, malloc(10 * sizeof(int))={11:0}, p={11:0}] [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 259 SDtfs, 211 SDslu, 716 SDs, 0 SdLazy, 726 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=13, 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, 13 MinimizatonAttempts, 37 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 647 NumberOfCodeBlocks, 631 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 574 ConstructedInterpolants, 0 QuantifiedInterpolants, 50358 SizeOfPredicates, 10 NumberOfNonLiveVariables, 905 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 29/1097 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...