./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/jain_7-2.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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/jain_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/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 876f7945e4fb4974c1e8dba27730dcbf7b8b3ec8 .................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:55:24,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:55:24,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:55:24,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:55:24,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:55:24,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:55:24,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:55:24,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:55:24,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:55:24,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:55:24,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:55:24,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:55:24,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:55:24,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:55:24,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:55:24,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:55:24,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:55:24,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:55:24,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:55:24,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:55:24,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:55:24,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:55:24,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:55:24,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:55:24,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:55:24,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:55:24,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:55:24,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:55:24,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:55:24,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:55:24,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:55:24,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:55:24,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:55:24,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:55:24,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:55:24,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:55:24,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:55:24,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:55:24,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:55:24,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:55:24,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:55:24,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:55:24,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:55:24,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:55:24,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:55:24,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:55:24,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:55:24,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:55:24,663 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:55:24,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:55:24,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:55:24,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:55:24,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:55:24,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:55:24,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:55:24,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:55:24,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:55:24,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:55:24,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:55:24,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:55:24,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:55:24,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:55:24,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:55:24,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:55:24,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:55:24,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:55:24,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:55:24,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:55:24,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:55:24,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:55:24,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:55:24,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:55:24,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:55:24,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:55:24,674 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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 876f7945e4fb4974c1e8dba27730dcbf7b8b3ec8 [2021-10-15 19:55:24,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:55:25,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:55:25,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:55:25,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:55:25,009 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:55:25,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/bitvector/jain_7-2.c [2021-10-15 19:55:25,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/data/39187bc38/1bab69c1f2144f23b6da6eb69d954231/FLAG3f215ef64 [2021-10-15 19:55:25,633 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:55:25,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/sv-benchmarks/c/bitvector/jain_7-2.c [2021-10-15 19:55:25,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/data/39187bc38/1bab69c1f2144f23b6da6eb69d954231/FLAG3f215ef64 [2021-10-15 19:55:25,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/data/39187bc38/1bab69c1f2144f23b6da6eb69d954231 [2021-10-15 19:55:25,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:55:25,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:55:25,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:55:25,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:55:26,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:55:26,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:55:25" (1/1) ... [2021-10-15 19:55:26,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3104e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26, skipping insertion in model container [2021-10-15 19:55:26,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:55:25" (1/1) ... [2021-10-15 19:55:26,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:55:26,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:55:26,164 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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/sv-benchmarks/c/bitvector/jain_7-2.c[370,383] [2021-10-15 19:55:26,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:55:26,185 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:55:26,199 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_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/sv-benchmarks/c/bitvector/jain_7-2.c[370,383] [2021-10-15 19:55:26,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:55:26,216 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:55:26,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26 WrapperNode [2021-10-15 19:55:26,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:55:26,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:55:26,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:55:26,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:55:26,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:55:26,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:55:26,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:55:26,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:55:26,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:55:26,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:55:26,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:55:26,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:55:26,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (1/1) ... [2021-10-15 19:55:26,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:55:26,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:26,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:55:26,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:55:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:55:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:55:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:55:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:55:26,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:55:26,609 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 19:55:26,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:26 BoogieIcfgContainer [2021-10-15 19:55:26,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:55:26,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:55:26,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:55:26,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:55:26,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:55:25" (1/3) ... [2021-10-15 19:55:26,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282f0f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:55:26, skipping insertion in model container [2021-10-15 19:55:26,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:26" (2/3) ... [2021-10-15 19:55:26,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282f0f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:55:26, skipping insertion in model container [2021-10-15 19:55:26,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:26" (3/3) ... [2021-10-15 19:55:26,622 INFO L111 eAbstractionObserver]: Analyzing ICFG jain_7-2.c [2021-10-15 19:55:26,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:55:26,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:55:26,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:55:26,694 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 19:55:26,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:55:26,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 12 transitions, 24 flow [2021-10-15 19:55:26,725 INFO L129 PetriNetUnfolder]: 3/12 cut-off events. [2021-10-15 19:55:26,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:26,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 12 events. 3/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:55:26,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 10 places, 12 transitions, 24 flow [2021-10-15 19:55:26,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 7 transitions, 14 flow [2021-10-15 19:55:26,735 INFO L129 PetriNetUnfolder]: 2/6 cut-off events. [2021-10-15 19:55:26,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:26,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:26,737 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 19:55:26,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:26,744 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-10-15 19:55:26,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:26,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085460422] [2021-10-15 19:55:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:26,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:27,030 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 19:55:27,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:27,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085460422] [2021-10-15 19:55:27,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085460422] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:55:27,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:55:27,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:55:27,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744943676] [2021-10-15 19:55:27,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:55:27,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:55:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:55:27,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 12 [2021-10-15 19:55:27,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 7 transitions, 14 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 19:55:27,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:27,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 12 [2021-10-15 19:55:27,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:27,150 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-10-15 19:55:27,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:27,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:55:27,154 INFO L132 encePairwiseOnDemand]: 7/12 looper letters, 2 selfloop transitions, 4 changer transitions 0/8 dead transitions. [2021-10-15 19:55:27,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 28 flow [2021-10-15 19:55:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:55:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:55:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2021-10-15 19:55:27,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2021-10-15 19:55:27,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 28 transitions. [2021-10-15 19:55:27,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 28 transitions. [2021-10-15 19:55:27,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:27,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 28 transitions. [2021-10-15 19:55:27,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:55:27,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:55:27,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:55:27,189 INFO L186 Difference]: Start difference. First operand has 6 places, 7 transitions, 14 flow. Second operand 4 states and 28 transitions. [2021-10-15 19:55:27,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 28 flow [2021-10-15 19:55:27,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:55:27,197 INFO L242 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2021-10-15 19:55:27,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2021-10-15 19:55:27,201 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2021-10-15 19:55:27,203 INFO L470 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2021-10-15 19:55:27,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 19:55:27,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:27,206 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-15 19:55:27,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:55:27,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1810804418, now seen corresponding path program 1 times [2021-10-15 19:55:27,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:27,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664293892] [2021-10-15 19:55:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:27,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:55:27,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:27,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664293892] [2021-10-15 19:55:27,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664293892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:27,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030155240] [2021-10-15 19:55:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:27,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:27,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:27,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:55:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:27,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-15 19:55:27,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:55:29,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030155240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:29,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:55:29,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-15 19:55:29,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667096667] [2021-10-15 19:55:29,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:55:29,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:55:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-10-15 19:55:30,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 12 [2021-10-15 19:55:30,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 19:55:30,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:30,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 12 [2021-10-15 19:55:30,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:38,084 WARN L207 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 35 [2021-10-15 19:55:51,846 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-10-15 19:55:51,847 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:55:51,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 13 events. 1/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-10-15 19:55:51,847 INFO L132 encePairwiseOnDemand]: 8/12 looper letters, 4 selfloop transitions, 7 changer transitions 0/13 dead transitions. [2021-10-15 19:55:51,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 86 flow [2021-10-15 19:55:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:55:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:55:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2021-10-15 19:55:51,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2021-10-15 19:55:51,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 48 transitions. [2021-10-15 19:55:51,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 48 transitions. [2021-10-15 19:55:51,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:51,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 48 transitions. [2021-10-15 19:55:51,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 19:55:51,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 19:55:51,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 19:55:51,863 INFO L186 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 7 states and 48 transitions. [2021-10-15 19:55:51,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 86 flow [2021-10-15 19:55:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:55:51,869 INFO L242 Difference]: Finished difference. Result has 20 places, 12 transitions, 86 flow [2021-10-15 19:55:51,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2021-10-15 19:55:51,870 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 14 predicate places. [2021-10-15 19:55:51,871 INFO L470 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 86 flow [2021-10-15 19:55:51,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 19:55:51,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:51,871 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1] [2021-10-15 19:55:51,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:52,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:52,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:52,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1809846642, now seen corresponding path program 2 times [2021-10-15 19:55:52,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:52,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012665082] [2021-10-15 19:55:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:52,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-15 19:55:52,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:52,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012665082] [2021-10-15 19:55:52,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012665082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:52,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309007705] [2021-10-15 19:55:52,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:55:52,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:52,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:52,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:55:53,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:55:53,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:55:53,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-15 19:55:53,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-15 19:55:56,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309007705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:56,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:55:56,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-15 19:55:56,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843669828] [2021-10-15 19:55:56,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:55:56,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:55:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-10-15 19:55:56,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 12 [2021-10-15 19:55:56,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 19:55:56,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:56,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 12 [2021-10-15 19:55:56,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:04,677 WARN L207 SmtUtils]: Spent 8.14 s on a formula simplification that was a NOOP. DAG size: 37 [2021-10-15 19:56:04,700 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-10-15 19:56:04,700 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-10-15 19:56:04,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 11 events. 1/11 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 22. Up to 9 conditions per place. [2021-10-15 19:56:04,702 INFO L132 encePairwiseOnDemand]: 9/12 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-10-15 19:56:04,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 94 flow [2021-10-15 19:56:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:56:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:56:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-15 19:56:04,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2021-10-15 19:56:04,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 25 transitions. [2021-10-15 19:56:04,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 25 transitions. [2021-10-15 19:56:04,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:04,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 25 transitions. [2021-10-15 19:56:04,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 19:56:04,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:56:04,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:56:04,706 INFO L186 Difference]: Start difference. First operand has 20 places, 12 transitions, 86 flow. Second operand 4 states and 25 transitions. [2021-10-15 19:56:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 94 flow [2021-10-15 19:56:04,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:56:04,709 INFO L242 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2021-10-15 19:56:04,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2021-10-15 19:56:04,710 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 11 predicate places. [2021-10-15 19:56:04,710 INFO L470 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2021-10-15 19:56:04,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 19:56:04,714 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:56:04,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-15 19:56:04,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:56:04,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:56:04,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:56:04 BoogieIcfgContainer [2021-10-15 19:56:04,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:56:04,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:56:04,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:56:04,935 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:56:04,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:26" (3/4) ... [2021-10-15 19:56:04,939 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:56:04,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:56:04,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:56:04,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:04,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:05,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:56:05,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:56:05,022 INFO L168 Benchmark]: Toolchain (without parser) took 39028.05 ms. Allocated memory is still 102.8 MB. Free memory was 73.8 MB in the beginning and 47.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,023 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:56:05,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.95 ms. Allocated memory is still 102.8 MB. Free memory was 73.5 MB in the beginning and 64.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 62.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,025 INFO L168 Benchmark]: Boogie Preprocessor took 38.99 ms. Allocated memory is still 102.8 MB. Free memory was 62.6 MB in the beginning and 61.7 MB in the end (delta: 918.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,026 INFO L168 Benchmark]: RCFGBuilder took 310.83 ms. Allocated memory is still 102.8 MB. Free memory was 61.7 MB in the beginning and 52.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,027 INFO L168 Benchmark]: TraceAbstraction took 38321.44 ms. Allocated memory is still 102.8 MB. Free memory was 52.1 MB in the beginning and 49.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,028 INFO L168 Benchmark]: Witness Printer took 86.44 ms. Allocated memory is still 102.8 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:05,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.95 ms. Allocated memory is still 102.8 MB. Free memory was 73.5 MB in the beginning and 64.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 102.8 MB. Free memory was 64.2 MB in the beginning and 62.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.99 ms. Allocated memory is still 102.8 MB. Free memory was 62.6 MB in the beginning and 61.7 MB in the end (delta: 918.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 310.83 ms. Allocated memory is still 102.8 MB. Free memory was 61.7 MB in the beginning and 52.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38321.44 ms. Allocated memory is still 102.8 MB. Free memory was 52.1 MB in the beginning and 49.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 86.44 ms. Allocated memory is still 102.8 MB. Free memory was 49.1 MB in the beginning and 47.0 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: 8]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38246.8ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 30182.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9694.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 24450.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=2, InterpolantAutomatonStates: 15, 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: 35.9ms SsaConstructionTime, 1203.7ms SatisfiabilityAnalysisTime, 6042.2ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12/28 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 19:56:05,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df3944d0-b8e4-4108-bebf-4a89fdcf1f8f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...