./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/const.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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invariants/const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/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 c800eedf7ac08f8178c44ada6802012e187e4e2c .................................................................................................................................................................................................................................................................................................................................... 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 20:10:20,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:10:20,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:10:20,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:10:20,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:10:20,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:10:20,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:10:20,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:10:20,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:10:20,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:10:20,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:10:20,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:10:20,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:10:20,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:10:20,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:10:20,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:10:20,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:10:20,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:10:20,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:10:20,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:10:20,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:10:20,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:10:20,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:10:20,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:10:20,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:10:20,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:10:20,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:10:20,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:10:20,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:10:20,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:10:20,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:10:20,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:10:20,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:10:20,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:10:20,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:10:20,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:10:20,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:10:20,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:10:20,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:10:20,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:10:20,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:10:20,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:10:20,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:10:20,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:10:20,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:10:20,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:10:20,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:10:20,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:10:20,770 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:10:20,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:10:20,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:10:20,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:10:20,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:10:20,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:10:20,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:10:20,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:10:20,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:10:20,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:10:20,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:10:20,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:10:20,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:10:20,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:10:20,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:10:20,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:10:20,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:10:20,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:10:20,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:10:20,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:10:20,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:10:20,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:10:20,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:10:20,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:10:20,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:10:20,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:10:20,779 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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c800eedf7ac08f8178c44ada6802012e187e4e2c [2021-10-15 20:10:21,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:10:21,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:10:21,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:10:21,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:10:21,109 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:10:21,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/loop-invariants/const.c [2021-10-15 20:10:21,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/data/823bcd3bf/ad8ef9f98fd24467a0f553130132264c/FLAGd8aea1abf [2021-10-15 20:10:21,600 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:10:21,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/sv-benchmarks/c/loop-invariants/const.c [2021-10-15 20:10:21,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/data/823bcd3bf/ad8ef9f98fd24467a0f553130132264c/FLAGd8aea1abf [2021-10-15 20:10:21,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/data/823bcd3bf/ad8ef9f98fd24467a0f553130132264c [2021-10-15 20:10:21,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:10:21,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:10:21,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:10:21,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:10:22,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:10:22,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:21" (1/1) ... [2021-10-15 20:10:22,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b65819e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22, skipping insertion in model container [2021-10-15 20:10:22,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:21" (1/1) ... [2021-10-15 20:10:22,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:10:22,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:10:22,183 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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/sv-benchmarks/c/loop-invariants/const.c[366,379] [2021-10-15 20:10:22,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:10:22,203 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:10:22,215 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_99c6ced6-502b-4c6d-af34-779f3e9a14cb/sv-benchmarks/c/loop-invariants/const.c[366,379] [2021-10-15 20:10:22,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:10:22,230 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:10:22,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22 WrapperNode [2021-10-15 20:10:22,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:10:22,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:10:22,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:10:22,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:10:22,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:10:22,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:10:22,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:10:22,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:10:22,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:10:22,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:10:22,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:10:22,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:10:22,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (1/1) ... [2021-10-15 20:10:22,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:10:22,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:10:22,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:10:22,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:10:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:10:22,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:10:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:10:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:10:22,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:10:22,528 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 20:10:22,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:22 BoogieIcfgContainer [2021-10-15 20:10:22,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:10:22,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:10:22,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:10:22,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:10:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:10:21" (1/3) ... [2021-10-15 20:10:22,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169d28e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:22, skipping insertion in model container [2021-10-15 20:10:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:22" (2/3) ... [2021-10-15 20:10:22,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169d28e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:22, skipping insertion in model container [2021-10-15 20:10:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:22" (3/3) ... [2021-10-15 20:10:22,539 INFO L111 eAbstractionObserver]: Analyzing ICFG const.c [2021-10-15 20:10:22,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:10:22,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:10:22,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:10:22,602 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 20:10:22,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:10:22,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 16 transitions, 32 flow [2021-10-15 20:10:22,631 INFO L129 PetriNetUnfolder]: 5/16 cut-off events. [2021-10-15 20:10:22,631 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:10:22,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 16 events. 5/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 20:10:22,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 16 transitions, 32 flow [2021-10-15 20:10:22,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 11 transitions, 22 flow [2021-10-15 20:10:22,639 INFO L129 PetriNetUnfolder]: 4/10 cut-off events. [2021-10-15 20:10:22,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:10:22,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:10:22,640 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:10:22,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:10:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:10:22,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2021-10-15 20:10:22,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:10:22,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357632632] [2021-10-15 20:10:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:10:22,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:10:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:10:22,963 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 20:10:22,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:10:22,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357632632] [2021-10-15 20:10:22,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357632632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:10:22,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:10:22,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:10:22,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819545354] [2021-10-15 20:10:22,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:10:22,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:10:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:10:23,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:10:23,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 16 [2021-10-15 20:10:23,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 11 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 20:10:23,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:10:23,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 16 [2021-10-15 20:10:23,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:10:23,040 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-10-15 20:10:23,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:10:23,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 3. Up to 3 conditions per place. [2021-10-15 20:10:23,042 INFO L132 encePairwiseOnDemand]: 13/16 looper letters, 2 selfloop transitions, 1 changer transitions 0/9 dead transitions. [2021-10-15 20:10:23,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 9 transitions, 24 flow [2021-10-15 20:10:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:10:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:10:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2021-10-15 20:10:23,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2021-10-15 20:10:23,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 35 transitions. [2021-10-15 20:10:23,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 35 transitions. [2021-10-15 20:10:23,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:10:23,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 35 transitions. [2021-10-15 20:10:23,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 20:10:23,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 20:10:23,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 20:10:23,066 INFO L186 Difference]: Start difference. First operand has 8 places, 11 transitions, 22 flow. Second operand 3 states and 35 transitions. [2021-10-15 20:10:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 9 transitions, 24 flow [2021-10-15 20:10:23,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 9 transitions, 24 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:10:23,070 INFO L242 Difference]: Finished difference. Result has 10 places, 9 transitions, 20 flow [2021-10-15 20:10:23,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=10, PETRI_TRANSITIONS=9} [2021-10-15 20:10:23,072 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 2 predicate places. [2021-10-15 20:10:23,073 INFO L470 AbstractCegarLoop]: Abstraction has has 10 places, 9 transitions, 20 flow [2021-10-15 20:10:23,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 20:10:23,073 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:10:23,074 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:10:23,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:10:23,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:10:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:10:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723982, now seen corresponding path program 1 times [2021-10-15 20:10:23,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:10:23,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371873994] [2021-10-15 20:10:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:10:23,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:10:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:10:23,136 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 20:10:23,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:10:23,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371873994] [2021-10-15 20:10:23,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371873994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:10:23,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:10:23,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:10:23,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792085457] [2021-10-15 20:10:23,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:10:23,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:10:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:10:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:10:23,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 16 [2021-10-15 20:10:23,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 9 transitions, 20 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 20:10:23,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:10:23,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 16 [2021-10-15 20:10:23,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:10:23,183 INFO L129 PetriNetUnfolder]: 3/11 cut-off events. [2021-10-15 20:10:23,191 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:10:23,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 11 events. 3/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 4 conditions per place. [2021-10-15 20:10:23,192 INFO L132 encePairwiseOnDemand]: 13/16 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-10-15 20:10:23,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 9 transitions, 32 flow [2021-10-15 20:10:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:10:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:10:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2021-10-15 20:10:23,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.609375 [2021-10-15 20:10:23,194 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 39 transitions. [2021-10-15 20:10:23,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 39 transitions. [2021-10-15 20:10:23,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:10:23,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 39 transitions. [2021-10-15 20:10:23,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 20:10:23,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 20:10:23,198 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 20:10:23,218 INFO L186 Difference]: Start difference. First operand has 10 places, 9 transitions, 20 flow. Second operand 4 states and 39 transitions. [2021-10-15 20:10:23,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 9 transitions, 32 flow [2021-10-15 20:10:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 9 transitions, 31 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:10:23,220 INFO L242 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2021-10-15 20:10:23,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2021-10-15 20:10:23,226 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 2 predicate places. [2021-10-15 20:10:23,226 INFO L470 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2021-10-15 20:10:23,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 20:10:23,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:10:23,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:10:23,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:10:23,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:10:23 BoogieIcfgContainer [2021-10-15 20:10:23,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:10:23,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:10:23,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:10:23,239 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:10:23,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:22" (3/4) ... [2021-10-15 20:10:23,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:10:23,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:10:23,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:10:23,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:10:23,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:10:23,305 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:10:23,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:10:23,307 INFO L168 Benchmark]: Toolchain (without parser) took 1310.02 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 84.1 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:10:23,308 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:10:23,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.88 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 67.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:10:23,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 65.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:10:23,310 INFO L168 Benchmark]: Boogie Preprocessor took 20.58 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 998.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:10:23,310 INFO L168 Benchmark]: RCFGBuilder took 251.19 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 55.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:10:23,311 INFO L168 Benchmark]: TraceAbstraction took 705.30 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 86.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:10:23,316 INFO L168 Benchmark]: Witness Printer took 67.04 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:10:23,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.88 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 67.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 65.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.58 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 64.9 MB in the end (delta: 998.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 251.19 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 55.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 705.30 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 86.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. * Witness Printer took 67.04 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.1 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: 7]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 643.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 153.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 7, 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: 8.1ms SsaConstructionTime, 94.4ms SatisfiabilityAnalysisTime, 168.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 20:10:23,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99c6ced6-502b-4c6d-af34-779f3e9a14cb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...