./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/signextension-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/signextension-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b158af10e4b33c83f51d06d3962a6bea4ea2d792 ................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:23:39,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:23:39,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:23:39,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:23:39,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:23:39,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:23:39,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:23:39,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:23:39,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:23:39,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:23:39,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:23:39,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:23:39,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:23:39,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:23:39,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:23:39,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:23:39,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:23:39,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:23:39,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:23:39,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:23:39,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:23:39,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:23:39,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:23:39,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:23:39,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:23:39,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:23:39,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:23:39,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:23:39,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:23:39,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:23:39,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:23:39,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:23:39,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:23:39,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:23:39,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:23:39,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:23:39,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:23:39,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:23:39,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:23:39,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:23:39,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:23:39,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:23:39,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:23:39,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:23:39,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:23:39,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:23:39,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:23:39,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:23:39,983 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:23:39,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:23:39,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:23:39,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:23:39,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:23:39,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:23:39,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:23:39,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:23:39,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:23:39,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:23:39,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:23:39,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:23:39,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:23:39,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:23:39,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:23:39,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:23:39,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:23:39,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:23:39,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:23:39,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:23:39,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:23:39,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:23:39,990 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:23:39,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:23:39,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:23:39,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:23:39,991 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_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b158af10e4b33c83f51d06d3962a6bea4ea2d792 [2021-10-15 19:23:40,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:23:40,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:23:40,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:23:40,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:23:40,289 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:23:40,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/bitvector-regression/signextension-2.c [2021-10-15 19:23:40,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/data/ac97bd9d6/69fe764583d44bfa99f5fa234e110f6c/FLAG149c79cc2 [2021-10-15 19:23:40,912 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:23:40,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/sv-benchmarks/c/bitvector-regression/signextension-2.c [2021-10-15 19:23:40,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/data/ac97bd9d6/69fe764583d44bfa99f5fa234e110f6c/FLAG149c79cc2 [2021-10-15 19:23:41,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/data/ac97bd9d6/69fe764583d44bfa99f5fa234e110f6c [2021-10-15 19:23:41,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:23:41,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:23:41,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:23:41,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:23:41,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:23:41,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323a7120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41, skipping insertion in model container [2021-10-15 19:23:41,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:23:41,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:23:41,504 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/sv-benchmarks/c/bitvector-regression/signextension-2.c[922,935] [2021-10-15 19:23:41,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:23:41,518 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:23:41,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/sv-benchmarks/c/bitvector-regression/signextension-2.c[922,935] [2021-10-15 19:23:41,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:23:41,563 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:23:41,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41 WrapperNode [2021-10-15 19:23:41,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:23:41,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:23:41,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:23:41,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:23:41,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:23:41,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:23:41,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:23:41,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:23:41,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:23:41,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:23:41,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:23:41,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:23:41,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (1/1) ... [2021-10-15 19:23:41,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:23:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:23:41,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:23:41,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:23:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:23:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:23:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:23:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:23:41,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:23:41,915 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:23:41,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:23:41 BoogieIcfgContainer [2021-10-15 19:23:41,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:23:41,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:23:41,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:23:41,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:23:41,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:23:41" (1/3) ... [2021-10-15 19:23:41,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595de1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:23:41, skipping insertion in model container [2021-10-15 19:23:41,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:23:41" (2/3) ... [2021-10-15 19:23:41,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595de1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:23:41, skipping insertion in model container [2021-10-15 19:23:41,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:23:41" (3/3) ... [2021-10-15 19:23:41,927 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-2.c [2021-10-15 19:23:41,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:23:41,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:23:41,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:23:41,996 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=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-15 19:23:41,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:23:42,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 8 places, 8 transitions, 16 flow [2021-10-15 19:23:42,024 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-10-15 19:23:42,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:23:42,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:23:42,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 8 places, 8 transitions, 16 flow [2021-10-15 19:23:42,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:23:42,032 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:23:42,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:23:42,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:23:42,033 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:23:42,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:23:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:23:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-10-15 19:23:42,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:23:42,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671923490] [2021-10-15 19:23:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:23:42,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:23:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:23:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:23:42,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:23:42,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671923490] [2021-10-15 19:23:42,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671923490] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:23:42,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:23:42,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:23:42,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348818286] [2021-10-15 19:23:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:23:42,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:23:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:23:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:23:42,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 8 [2021-10-15 19:23:42,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:23:42,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:23:42,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 8 [2021-10-15 19:23:42,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:23:42,771 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 19:23:42,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:23:42,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 19:23:42,772 INFO L132 encePairwiseOnDemand]: 6/8 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 19:23:42,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 2 transitions, 6 flow [2021-10-15 19:23:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:23:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:23:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-10-15 19:23:42,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2021-10-15 19:23:42,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 14 transitions. [2021-10-15 19:23:42,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 14 transitions. [2021-10-15 19:23:42,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:23:42,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 14 transitions. [2021-10-15 19:23:42,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:23:42,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-10-15 19:23:42,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-10-15 19:23:42,800 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 3 states and 14 transitions. [2021-10-15 19:23:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 2 transitions, 6 flow [2021-10-15 19:23:42,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 2 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:23:42,804 INFO L242 Difference]: Finished difference. Result has 5 places, 0 transitions, 0 flow [2021-10-15 19:23:42,806 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=8, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=5, PETRI_TRANSITIONS=0} [2021-10-15 19:23:42,807 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 0 predicate places. [2021-10-15 19:23:42,807 INFO L470 AbstractCegarLoop]: Abstraction has has 5 places, 0 transitions, 0 flow [2021-10-15 19:23:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:23:42,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:23:42,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:23:42,818 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:23:42,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:23:42 BoogieIcfgContainer [2021-10-15 19:23:42,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:23:42,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:23:42,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:23:42,824 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:23:42,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:23:41" (3/4) ... [2021-10-15 19:23:42,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:23:42,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:23:42,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:23:42,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:23:42,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:23:42,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:23:42,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:23:42,881 INFO L168 Benchmark]: Toolchain (without parser) took 1582.01 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 57.3 MB in the beginning and 80.4 MB in the end (delta: -23.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:23:42,882 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:23:42,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.40 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 68.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:23:42,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.61 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:23:42,884 INFO L168 Benchmark]: Boogie Preprocessor took 20.97 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.4 MB in the end (delta: 838.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:23:42,884 INFO L168 Benchmark]: RCFGBuilder took 291.18 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 57.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:23:42,885 INFO L168 Benchmark]: TraceAbstraction took 903.46 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 82.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 132.0 kB. Max. memory is 16.1 GB. [2021-10-15 19:23:42,886 INFO L168 Benchmark]: Witness Printer took 55.40 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:23:42,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.40 ms. Allocated memory is still 92.3 MB. Free memory was 57.1 MB in the beginning and 68.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.61 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.97 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.4 MB in the end (delta: 838.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 291.18 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 57.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 903.46 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 82.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 132.0 kB. Max. memory is 16.1 GB. * Witness Printer took 55.40 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 80.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 835.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 53.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.8ms SsaConstructionTime, 78.2ms SatisfiabilityAnalysisTime, 528.9ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:23:42,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d505084-e8b2-4594-88d8-aba43c952221/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...