./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD --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 8873a5afb79ec0e8798e8f1423b386b30ed09073bcea97b4a19d8bc56ced7206 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:47:54,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:47:54,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:47:54,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:47:54,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:47:54,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:47:54,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:47:54,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:47:54,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:47:54,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:47:54,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:47:54,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:47:54,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:47:54,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:47:54,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:47:54,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:47:54,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:47:54,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:47:54,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:47:54,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:47:54,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:47:54,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:47:54,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:47:54,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:47:54,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:47:54,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:47:54,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:47:54,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:47:54,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:47:54,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:47:54,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:47:54,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:47:54,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:47:54,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:47:54,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:47:54,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:47:54,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:47:54,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:47:54,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:47:54,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:47:54,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:47:54,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:47:54,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:47:54,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:47:54,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:47:54,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:47:54,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:47:54,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:47:54,718 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:47:54,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:47:54,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:47:54,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:47:54,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:47:54,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:47:54,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:47:54,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:47:54,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:47:54,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:47:54,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:47:54,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:47:54,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:47:54,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:47:54,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:47:54,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:47:54,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:54,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:47:54,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:47:54,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:47:54,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:47:54,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:47:54,724 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:47:54,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:47:54,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:47:54,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:47:54,727 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_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8873a5afb79ec0e8798e8f1423b386b30ed09073bcea97b4a19d8bc56ced7206 [2021-10-28 23:47:55,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:47:55,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:47:55,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:47:55,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:47:55,125 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:47:55,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-10-28 23:47:55,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/data/d8a743f6b/833247a52fd9439a8b02df6c2e77ef36/FLAG91e241396 [2021-10-28 23:47:55,789 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:47:55,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-10-28 23:47:55,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/data/d8a743f6b/833247a52fd9439a8b02df6c2e77ef36/FLAG91e241396 [2021-10-28 23:47:56,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/data/d8a743f6b/833247a52fd9439a8b02df6c2e77ef36 [2021-10-28 23:47:56,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:47:56,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:47:56,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:56,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:47:56,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:47:56,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa96161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56, skipping insertion in model container [2021-10-28 23:47:56,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:47:56,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:47:56,446 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_d4806899-59fe-4333-9f8b-9f87fb41ca09/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] [2021-10-28 23:47:56,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:56,466 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:47:56,480 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_d4806899-59fe-4333-9f8b-9f87fb41ca09/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] [2021-10-28 23:47:56,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:56,498 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:47:56,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56 WrapperNode [2021-10-28 23:47:56,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:56,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:56,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:47:56,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:47:56,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:56,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:47:56,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:47:56,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:47:56,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:47:56,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:47:56,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:47:56,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:47:56,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (1/1) ... [2021-10-28 23:47:56,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:56,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:56,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:47:56,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:47:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:47:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:47:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:47:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:47:56,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:47:56,896 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:47:56,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:56 BoogieIcfgContainer [2021-10-28 23:47:56,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:47:56,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:47:56,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:47:56,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:47:56,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:56" (1/3) ... [2021-10-28 23:47:56,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2736a611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:56, skipping insertion in model container [2021-10-28 23:47:56,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:56" (2/3) ... [2021-10-28 23:47:56,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2736a611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:56, skipping insertion in model container [2021-10-28 23:47:56,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:56" (3/3) ... [2021-10-28 23:47:56,911 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2021-10-28 23:47:56,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:47:56,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:47:57,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:47:57,014 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, mAutomataTypeConcurrency=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 [2021-10-28 23:47:57,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:47:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 23:47:57,043 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:57,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 23:47:57,046 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-10-28 23:47:57,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:57,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798146021] [2021-10-28 23:47:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:57,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:57,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:57,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798146021] [2021-10-28 23:47:57,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798146021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:57,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:57,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:47:57,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138461080] [2021-10-28 23:47:57,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:47:57,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:47:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:47:57,435 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:57,481 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-28 23:47:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:47:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2021-10-28 23:47:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:57,491 INFO L225 Difference]: With dead ends: 27 [2021-10-28 23:47:57,492 INFO L226 Difference]: Without dead ends: 10 [2021-10-28 23:47:57,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:47:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-28 23:47:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-28 23:47:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-28 23:47:57,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-28 23:47:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-28 23:47:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-28 23:47:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:47:57,541 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:57,541 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:57,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:47:57,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 271133217, now seen corresponding path program 1 times [2021-10-28 23:47:57,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:57,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113088812] [2021-10-28 23:47:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:57,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:57,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:57,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113088812] [2021-10-28 23:47:57,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113088812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:57,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973841937] [2021-10-28 23:47:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:57,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:57,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:57,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:47:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:57,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:47:57,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:57,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973841937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:57,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 23:47:57,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132991460] [2021-10-28 23:47:57,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:47:57,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:47:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:57,818 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:57,889 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-28 23:47:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:47:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:57,891 INFO L225 Difference]: With dead ends: 16 [2021-10-28 23:47:57,891 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 23:47:57,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:47:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 23:47:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-10-28 23:47:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-28 23:47:57,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-28 23:47:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:57,896 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-28 23:47:57,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-28 23:47:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:47:57,898 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:57,898 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-28 23:47:57,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:58,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:58,122 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1498979959, now seen corresponding path program 2 times [2021-10-28 23:47:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:58,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861303723] [2021-10-28 23:47:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:58,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:58,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:58,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861303723] [2021-10-28 23:47:58,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861303723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:58,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120002283] [2021-10-28 23:47:58,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:47:58,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:58,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:58,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:47:58,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:47:58,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:58,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:47:58,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:58,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120002283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:58,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:58,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-28 23:47:58,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194383510] [2021-10-28 23:47:58,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:47:58,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:47:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:58,402 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:58,451 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-28 23:47:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:47:58,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 11 [2021-10-28 23:47:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:58,452 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:47:58,453 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 23:47:58,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:47:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 23:47:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-10-28 23:47:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-28 23:47:58,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2021-10-28 23:47:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:58,460 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-28 23:47:58,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-28 23:47:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:47:58,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:58,462 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2021-10-28 23:47:58,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:58,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-28 23:47:58,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1332145887, now seen corresponding path program 3 times [2021-10-28 23:47:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:58,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026199920] [2021-10-28 23:47:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:58,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:58,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:58,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026199920] [2021-10-28 23:47:58,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026199920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:58,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805972634] [2021-10-28 23:47:58,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:47:58,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:58,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:47:58,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:47:58,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:58,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:47:58,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 23:47:59,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805972634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:59,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:59,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-28 23:47:59,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785532603] [2021-10-28 23:47:59,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:47:59,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:47:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:47:59,149 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-10-28 23:47:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:59,344 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-28 23:47:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:47:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 14 [2021-10-28 23:47:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:59,346 INFO L225 Difference]: With dead ends: 20 [2021-10-28 23:47:59,346 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:47:59,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:47:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:47:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:47:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:47:59,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-28 23:47:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:59,350 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:47:59,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-10-28 23:47:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:47:59,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:47:59,354 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:47:59,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:59,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:59,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:47:59,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:59,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:59,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:59,793 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:47:59,793 INFO L853 garLoopResultBuilder]: At program point L29(lines 24 30) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2021-10-28 23:47:59,794 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 23:47:59,794 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:47:59,794 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:47:59,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:47:59,795 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 23:47:59,795 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~i~0 1000001)) (= ULTIMATE.start_main_~i~0 0)) [2021-10-28 23:47:59,795 INFO L857 garLoopResultBuilder]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2021-10-28 23:47:59,796 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 23:47:59,796 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 1 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 1000000) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= ULTIMATE.start_main_~i~0 1000000))) [2021-10-28 23:47:59,800 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1] [2021-10-28 23:47:59,802 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:47:59,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:47:59 BoogieIcfgContainer [2021-10-28 23:47:59,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:47:59,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:47:59,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:47:59,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:47:59,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:56" (3/4) ... [2021-10-28 23:47:59,833 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:47:59,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:47:59,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:47:59,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:47:59,850 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:47:59,912 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:47:59,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:47:59,914 INFO L168 Benchmark]: Toolchain (without parser) took 3766.99 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 70.8 MB in the beginning and 81.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,914 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:59,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.60 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 86.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.76 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,919 INFO L168 Benchmark]: Boogie Preprocessor took 22.23 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:59,920 INFO L168 Benchmark]: RCFGBuilder took 340.10 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 74.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,921 INFO L168 Benchmark]: TraceAbstraction took 2923.05 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 74.4 MB in the beginning and 83.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,922 INFO L168 Benchmark]: Witness Printer took 87.57 ms. Allocated memory is still 153.1 MB. Free memory was 83.6 MB in the beginning and 81.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:59,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.60 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 86.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.76 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.23 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 340.10 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 74.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2923.05 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 74.4 MB in the beginning and 83.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * Witness Printer took 87.57 ms. Allocated memory is still 153.1 MB. Free memory was 83.6 MB in the beginning and 81.5 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 57 SDslu, 40 SDs, 0 SdLazy, 58 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 344 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 71 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 176 SizeOfPredicates, 8 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 14/48 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 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (i <= 1000000 && 1 == cond) && !(i == 1000000) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (1 <= cond && i < 1000001) || i == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i <= 1000000 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:47:59,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4806899-59fe-4333-9f8b-9f87fb41ca09/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...