./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg --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 1fb17cc8fe5a0faedd7397d9dad19c9fd18716037f6fbcc01ca4a50f1481e06c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:47:13,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:47:13,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:47:13,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:47:13,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:47:13,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:47:13,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:47:13,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:47:13,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:47:13,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:47:13,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:47:13,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:47:13,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:47:13,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:47:13,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:47:13,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:47:13,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:47:13,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:47:13,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:47:13,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:47:13,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:47:13,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:47:13,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:47:13,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:47:13,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:47:13,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:47:13,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:47:13,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:47:13,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:47:13,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:47:13,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:47:13,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:47:13,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:47:13,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:47:13,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:47:13,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:47:13,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:47:13,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:47:13,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:47:13,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:47:13,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:47:13,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:47:13,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:47:13,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:47:13,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:47:13,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:47:13,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:47:13,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:47:13,697 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:47:13,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:47:13,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:47:13,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:47:13,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:47:13,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:47:13,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:47:13,700 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:47:13,700 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:47:13,701 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:47:13,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:47:13,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:47:13,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:47:13,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:47:13,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:47:13,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:47:13,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:47:13,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:47:13,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:47:13,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:47:13,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:47:13,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:47:13,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:47:13,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fb17cc8fe5a0faedd7397d9dad19c9fd18716037f6fbcc01ca4a50f1481e06c [2021-10-28 09:47:13,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:47:14,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:47:14,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:47:14,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:47:14,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:47:14,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2021-10-28 09:47:14,120 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/data/027be7245/c63f9339cd154b629daaafd8833151a2/FLAG154e5ec5f [2021-10-28 09:47:14,523 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:47:14,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/sv-benchmarks/c/memsafety-ext3/getNumbers1-2.c [2021-10-28 09:47:14,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/data/027be7245/c63f9339cd154b629daaafd8833151a2/FLAG154e5ec5f [2021-10-28 09:47:14,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/data/027be7245/c63f9339cd154b629daaafd8833151a2 [2021-10-28 09:47:14,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:47:14,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:47:14,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:47:14,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:47:14,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:47:14,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:47:14" (1/1) ... [2021-10-28 09:47:14,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3849f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:14, skipping insertion in model container [2021-10-28 09:47:14,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:47:14" (1/1) ... [2021-10-28 09:47:14,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:47:14,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:47:15,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:47:15,143 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:47:15,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:47:15,172 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:47:15,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15 WrapperNode [2021-10-28 09:47:15,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:47:15,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:47:15,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:47:15,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:47:15,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:47:15,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:47:15,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:47:15,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:47:15,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (1/1) ... [2021-10-28 09:47:15,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:47:15,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:15,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:47:15,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:47:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:47:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:47:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-10-28 09:47:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:47:15,300 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-28 09:47:15,300 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-10-28 09:47:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:47:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:47:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:47:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:47:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:47:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:47:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:47:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:47:15,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:47:15,493 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 09:47:15,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:47:15 BoogieIcfgContainer [2021-10-28 09:47:15,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:47:15,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:47:15,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:47:15,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:47:15,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:47:14" (1/3) ... [2021-10-28 09:47:15,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:47:15, skipping insertion in model container [2021-10-28 09:47:15,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:47:15" (2/3) ... [2021-10-28 09:47:15,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:47:15, skipping insertion in model container [2021-10-28 09:47:15,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:47:15" (3/3) ... [2021-10-28 09:47:15,503 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-2.c [2021-10-28 09:47:15,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:47:15,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-28 09:47:15,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:47:15,563 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:47:15,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 09:47:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:47:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:47:15,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:15,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:15,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2021-10-28 09:47:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674802642] [2021-10-28 09:47:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:15,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:15,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:15,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674802642] [2021-10-28 09:47:15,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674802642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:47:15,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:47:15,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:47:15,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828163727] [2021-10-28 09:47:15,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:47:15,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:47:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:47:15,913 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:16,031 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-10-28 09:47:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:47:16,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:47:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:16,049 INFO L225 Difference]: With dead ends: 42 [2021-10-28 09:47:16,050 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 09:47:16,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:47:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 09:47:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2021-10-28 09:47:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-28 09:47:16,084 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2021-10-28 09:47:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:16,085 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-28 09:47:16,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-28 09:47:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:47:16,086 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:16,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:16,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:47:16,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2021-10-28 09:47:16,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:16,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87273241] [2021-10-28 09:47:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:16,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:16,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:16,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87273241] [2021-10-28 09:47:16,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87273241] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:47:16,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:47:16,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:47:16,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315977533] [2021-10-28 09:47:16,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:47:16,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:47:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:47:16,220 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:16,326 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 09:47:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:47:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:47:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:16,328 INFO L225 Difference]: With dead ends: 24 [2021-10-28 09:47:16,328 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 09:47:16,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:47:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 09:47:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-28 09:47:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-28 09:47:16,334 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2021-10-28 09:47:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:16,335 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-28 09:47:16,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-28 09:47:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:47:16,336 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:16,336 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:16,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:47:16,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2021-10-28 09:47:16,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:16,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474975662] [2021-10-28 09:47:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:16,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:16,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:16,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474975662] [2021-10-28 09:47:16,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474975662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:16,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142721742] [2021-10-28 09:47:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:16,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:16,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:16,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:47:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:16,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:47:16,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:16,627 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 09:47:16,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 09:47:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:16,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142721742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:16,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:16,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 09:47:16,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828965944] [2021-10-28 09:47:16,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:47:16,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:47:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:47:16,822 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:16,973 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-28 09:47:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:47:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:47:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:16,976 INFO L225 Difference]: With dead ends: 27 [2021-10-28 09:47:16,976 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 09:47:16,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:47:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 09:47:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-28 09:47:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-28 09:47:16,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-10-28 09:47:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:16,991 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-28 09:47:16,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:47:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-28 09:47:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:47:16,996 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:16,996 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:17,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:17,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:17,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1378383288, now seen corresponding path program 1 times [2021-10-28 09:47:17,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:17,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365308433] [2021-10-28 09:47:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:17,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:47:17,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:17,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365308433] [2021-10-28 09:47:17,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365308433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:47:17,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:47:17,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:47:17,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743262879] [2021-10-28 09:47:17,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:47:17,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:47:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:47:17,333 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:17,422 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-10-28 09:47:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:47:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-28 09:47:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:17,424 INFO L225 Difference]: With dead ends: 26 [2021-10-28 09:47:17,424 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:47:17,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:47:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:47:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 09:47:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-28 09:47:17,428 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2021-10-28 09:47:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:17,428 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-28 09:47:17,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-28 09:47:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:47:17,429 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:17,430 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:17,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:47:17,430 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1378383287, now seen corresponding path program 1 times [2021-10-28 09:47:17,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:17,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470899085] [2021-10-28 09:47:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:17,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:17,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:17,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470899085] [2021-10-28 09:47:17,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470899085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:17,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066405430] [2021-10-28 09:47:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:17,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:17,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:17,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:17,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:47:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:17,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:47:17,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:17,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066405430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:17,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:17,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-10-28 09:47:17,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603961128] [2021-10-28 09:47:17,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:47:17,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:47:17,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:47:17,714 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:17,783 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-28 09:47:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:47:17,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-28 09:47:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:17,790 INFO L225 Difference]: With dead ends: 31 [2021-10-28 09:47:17,790 INFO L226 Difference]: Without dead ends: 31 [2021-10-28 09:47:17,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:47:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-28 09:47:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-10-28 09:47:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-28 09:47:17,806 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2021-10-28 09:47:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:17,807 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-28 09:47:17,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-28 09:47:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:47:17,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:17,809 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:17,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:18,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:18,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:18,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -149204608, now seen corresponding path program 2 times [2021-10-28 09:47:18,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:18,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058575195] [2021-10-28 09:47:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:18,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:18,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:18,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058575195] [2021-10-28 09:47:18,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058575195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:18,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613072137] [2021-10-28 09:47:18,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:47:18,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:18,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:18,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:18,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:47:18,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:47:18,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:47:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:47:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:18,329 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 09:47:18,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 09:47:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 09:47:18,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613072137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:47:18,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:47:18,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2021-10-28 09:47:18,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813736380] [2021-10-28 09:47:18,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:47:18,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:47:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:47:18,542 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:18,613 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-28 09:47:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:47:18,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-10-28 09:47:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:18,615 INFO L225 Difference]: With dead ends: 33 [2021-10-28 09:47:18,615 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 09:47:18,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:47:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 09:47:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-10-28 09:47:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-28 09:47:18,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2021-10-28 09:47:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:18,623 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-28 09:47:18,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-28 09:47:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:47:18,624 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:18,625 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:18,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:18,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:18,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1845681667, now seen corresponding path program 1 times [2021-10-28 09:47:18,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:18,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162860616] [2021-10-28 09:47:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:18,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:47:18,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:18,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162860616] [2021-10-28 09:47:18,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162860616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:18,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246844452] [2021-10-28 09:47:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:18,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:18,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:18,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:47:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:47:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:47:19,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246844452] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:19,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:19,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-10-28 09:47:19,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469246841] [2021-10-28 09:47:19,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:47:19,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:47:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:47:19,121 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:19,195 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-10-28 09:47:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:47:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-10-28 09:47:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:19,197 INFO L225 Difference]: With dead ends: 36 [2021-10-28 09:47:19,197 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 09:47:19,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:47:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 09:47:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-10-28 09:47:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-10-28 09:47:19,201 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2021-10-28 09:47:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:19,202 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-28 09:47:19,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-10-28 09:47:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:47:19,203 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:19,203 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:19,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:19,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:47:19,419 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 513923820, now seen corresponding path program 2 times [2021-10-28 09:47:19,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:19,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561979666] [2021-10-28 09:47:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:19,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:47:19,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:19,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561979666] [2021-10-28 09:47:19,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561979666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:19,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342859913] [2021-10-28 09:47:19,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:47:19,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:19,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:19,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:47:19,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:47:19,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:47:19,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:47:19,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:47:19,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342859913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:19,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:19,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-10-28 09:47:19,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185500267] [2021-10-28 09:47:19,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:47:19,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:47:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:47:19,733 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:19,814 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-28 09:47:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:47:19,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-10-28 09:47:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:19,818 INFO L225 Difference]: With dead ends: 39 [2021-10-28 09:47:19,818 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 09:47:19,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:47:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 09:47:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-10-28 09:47:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-28 09:47:19,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2021-10-28 09:47:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:19,823 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-28 09:47:19,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:47:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-28 09:47:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:47:19,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:19,824 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:19,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 09:47:20,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:20,041 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-10-28 09:47:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1271183005, now seen corresponding path program 3 times [2021-10-28 09:47:20,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:20,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995112984] [2021-10-28 09:47:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:20,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:47:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:20,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:47:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:47:20,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:20,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995112984] [2021-10-28 09:47:20,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995112984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:20,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859247372] [2021-10-28 09:47:20,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:47:20,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:20,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:20,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:20,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:47:20,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:47:20,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:47:20,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:47:20,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:20,310 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 09:47:20,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 09:47:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-28 09:47:20,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859247372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:47:20,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:47:20,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-10-28 09:47:20,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067127995] [2021-10-28 09:47:20,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:47:20,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:47:20,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:47:20,646 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:20,771 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-28 09:47:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:47:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-10-28 09:47:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:20,773 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:47:20,773 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:47:20,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:47:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:47:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:47:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:47:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:47:20,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-28 09:47:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:20,774 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:47:20,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:47:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:47:20,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:47:20,776 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:47:20,777 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:47:20,777 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:47:20,777 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr0REQUIRES_VIOLATION [2021-10-28 09:47:20,777 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr1REQUIRES_VIOLATION [2021-10-28 09:47:20,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:20,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:20,991 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2021-10-28 09:47:20,993 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:47:20,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:47:20 BoogieIcfgContainer [2021-10-28 09:47:20,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:47:20,996 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:47:20,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:47:20,996 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:47:20,997 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:47:15" (3/4) ... [2021-10-28 09:47:20,999 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:47:21,006 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 09:47:21,006 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 09:47:21,006 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2021-10-28 09:47:21,012 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 09:47:21,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 09:47:21,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:47:21,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:47:21,074 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:47:21,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:47:21,075 INFO L168 Benchmark]: Toolchain (without parser) took 6133.21 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.3 MB in the beginning and 83.3 MB in the end (delta: -25.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:21,076 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 94.4 MB. Free memory was 74.9 MB in the beginning and 74.8 MB in the end (delta: 51.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:21,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.08 ms. Allocated memory is still 94.4 MB. Free memory was 58.1 MB in the beginning and 71.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:21,077 INFO L168 Benchmark]: Boogie Preprocessor took 33.55 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 69.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:21,078 INFO L168 Benchmark]: RCFGBuilder took 287.31 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:21,078 INFO L168 Benchmark]: TraceAbstraction took 5498.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.3 MB in the beginning and 85.4 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:47:21,078 INFO L168 Benchmark]: Witness Printer took 78.16 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 83.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:47:21,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 94.4 MB. Free memory was 74.9 MB in the beginning and 74.8 MB in the end (delta: 51.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.08 ms. Allocated memory is still 94.4 MB. Free memory was 58.1 MB in the beginning and 71.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.55 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 69.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.31 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5498.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.3 MB in the beginning and 85.4 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 78.16 ms. Allocated memory is still 113.2 MB. Free memory was 85.4 MB in the beginning and 83.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 162 SDslu, 257 SDs, 0 SdLazy, 408 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=8, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 361 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 346 ConstructedInterpolants, 0 QuantifiedInterpolants, 1737 SizeOfPredicates, 7 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 97/312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:47:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f15cf46-4c63-49f8-b964-b55f022cd0d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...