./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU --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 b89d5a1db28cdbe10153d7e75038bff16b1343640a8d05a90f6e5bdf82eae94a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:18:09,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:18:09,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:18:09,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:18:09,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:18:09,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:18:09,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:18:09,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:18:09,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:18:09,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:18:09,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:18:09,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:18:09,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:18:09,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:18:09,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:18:09,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:18:09,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:18:09,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:18:09,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:18:09,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:18:09,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:18:09,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:18:09,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:18:09,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:18:09,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:18:09,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:18:09,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:18:09,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:18:09,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:18:09,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:18:09,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:18:09,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:18:09,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:18:09,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:18:09,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:18:09,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:18:09,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:18:09,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:18:09,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:18:09,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:18:09,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:18:09,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:18:09,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:18:09,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:18:09,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:18:09,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:18:09,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:18:09,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:18:09,772 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:18:09,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:18:09,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:18:09,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:18:09,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:18:09,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:18:09,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:18:09,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:18:09,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:18:09,776 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:18:09,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:18:09,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:18:09,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:18:09,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:18:09,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:18:09,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:18:09,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:18:09,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:18:09,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:18:09,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:18:09,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:18:09,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:18:09,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:18:09,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:18:09,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:18:09,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:18:09,782 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_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b89d5a1db28cdbe10153d7e75038bff16b1343640a8d05a90f6e5bdf82eae94a [2021-11-02 22:18:10,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:18:10,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:18:10,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:18:10,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:18:10,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:18:10,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-11-02 22:18:10,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/data/b61e1ee50/14c849918a7c441194435988986e5856/FLAG5d7ac7136 [2021-11-02 22:18:10,966 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:18:10,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-11-02 22:18:10,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/data/b61e1ee50/14c849918a7c441194435988986e5856/FLAG5d7ac7136 [2021-11-02 22:18:11,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/data/b61e1ee50/14c849918a7c441194435988986e5856 [2021-11-02 22:18:11,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:18:11,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:18:11,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:11,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:18:11,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:18:11,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad7555d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11, skipping insertion in model container [2021-11-02 22:18:11,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:18:11,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:18:11,661 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_cd613dae-7519-4037-ba7a-9df022ba8291/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-11-02 22:18:11,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:11,694 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:18:11,707 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_cd613dae-7519-4037-ba7a-9df022ba8291/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-11-02 22:18:11,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:11,729 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:18:11,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11 WrapperNode [2021-11-02 22:18:11,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:11,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:18:11,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:18:11,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:18:11,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:18:11,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:18:11,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:18:11,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:18:11,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:18:11,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:18:11,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:18:11,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:18:11,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (1/1) ... [2021-11-02 22:18:11,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:18:11,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:18:11,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:18:11,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:18:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:18:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:18:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:18:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:18:12,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:18:12,266 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-02 22:18:12,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:18:12 BoogieIcfgContainer [2021-11-02 22:18:12,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:18:12,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:18:12,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:18:12,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:18:12,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:18:11" (1/3) ... [2021-11-02 22:18:12,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f77ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:18:12, skipping insertion in model container [2021-11-02 22:18:12,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:11" (2/3) ... [2021-11-02 22:18:12,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f77ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:18:12, skipping insertion in model container [2021-11-02 22:18:12,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:18:12" (3/3) ... [2021-11-02 22:18:12,291 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-11-02 22:18:12,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:18:12,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:18:12,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:18:12,413 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 [2021-11-02 22:18:12,413 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:18:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-11-02 22:18:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:18:12,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:12,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:12,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:18:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1296464707, now seen corresponding path program 1 times [2021-11-02 22:18:12,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:18:12,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740485927] [2021-11-02 22:18:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:12,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:18:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:12,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:18:12,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740485927] [2021-11-02 22:18:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740485927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:12,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:18:12,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663350142] [2021-11-02 22:18:12,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:18:12,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:18:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:18:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:18:12,764 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-02 22:18:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:12,804 INFO L93 Difference]: Finished difference Result 51 states and 80 transitions. [2021-11-02 22:18:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:18:12,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-02 22:18:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:12,816 INFO L225 Difference]: With dead ends: 51 [2021-11-02 22:18:12,816 INFO L226 Difference]: Without dead ends: 25 [2021-11-02 22:18:12,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:18:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-02 22:18:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-11-02 22:18:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-02 22:18:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-02 22:18:12,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2021-11-02 22:18:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:12,862 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-02 22:18:12,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-02 22:18:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-02 22:18:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:18:12,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:12,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:12,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:18:12,865 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:18:12,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash -308834241, now seen corresponding path program 1 times [2021-11-02 22:18:12,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:18:12,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903824182] [2021-11-02 22:18:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:12,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:18:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:12,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:18:12,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903824182] [2021-11-02 22:18:12,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903824182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:18:12,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758351748] [2021-11-02 22:18:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:12,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:12,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:18:12,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:18:13,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:18:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:13,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:18:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:13,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758351748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:18:13,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:18:13,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:18:13,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138601824] [2021-11-02 22:18:13,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:18:13,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:18:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:18:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:18:13,172 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-02 22:18:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:13,202 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-11-02 22:18:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:18:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 12 [2021-11-02 22:18:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:13,204 INFO L225 Difference]: With dead ends: 42 [2021-11-02 22:18:13,205 INFO L226 Difference]: Without dead ends: 27 [2021-11-02 22:18:13,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:18:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-02 22:18:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-11-02 22:18:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2021-11-02 22:18:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-02 22:18:13,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-02 22:18:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:13,227 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-02 22:18:13,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-02 22:18:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-02 22:18:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:18:13,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:13,229 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:13,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:13,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:13,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:18:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash -383728831, now seen corresponding path program 2 times [2021-11-02 22:18:13,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:18:13,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939288445] [2021-11-02 22:18:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:13,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:18:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:13,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:18:13,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939288445] [2021-11-02 22:18:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939288445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:18:13,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516487237] [2021-11-02 22:18:13,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:18:13,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:18:13,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:18:13,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:18:13,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:18:13,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:18:13,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:18:13,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:13,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516487237] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:18:13,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:18:13,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-02 22:18:13,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483362787] [2021-11-02 22:18:13,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:18:13,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:18:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:18:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:18:13,891 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-02 22:18:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:13,937 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2021-11-02 22:18:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:18:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 [2021-11-02 22:18:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:13,940 INFO L225 Difference]: With dead ends: 46 [2021-11-02 22:18:13,940 INFO L226 Difference]: Without dead ends: 29 [2021-11-02 22:18:13,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:18:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-02 22:18:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-11-02 22:18:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:18:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-02 22:18:13,946 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-11-02 22:18:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:13,947 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-02 22:18:13,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-02 22:18:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-02 22:18:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:18:13,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:13,949 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:13,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:14,174 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:18:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 657014211, now seen corresponding path program 3 times [2021-11-02 22:18:14,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:18:14,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420822225] [2021-11-02 22:18:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:14,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:18:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:14,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:18:14,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420822225] [2021-11-02 22:18:14,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420822225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:18:14,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141228058] [2021-11-02 22:18:14,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:18:14,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:18:14,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:18:14,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:18:14,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 22:18:14,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:18:14,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:18:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:18:14,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141228058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:14,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:18:14,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-02 22:18:14,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687327895] [2021-11-02 22:18:14,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:18:14,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:18:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:18:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:18:14,955 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-02 22:18:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:15,620 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-11-02 22:18:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:18:15,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 16 [2021-11-02 22:18:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:15,621 INFO L225 Difference]: With dead ends: 36 [2021-11-02 22:18:15,621 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:18:15,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:18:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:18:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:18:15,623 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) [2021-11-02 22:18:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:18:15,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-02 22:18:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:15,624 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:18:15,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-11-02 22:18:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:18:15,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:18:15,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:18:15,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 22:18:15,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:18:15,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:18:15,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:15,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:18:16,467 INFO L857 garLoopResultBuilder]: For program point L23-2(line 23) no Hoare annotation was computed. [2021-11-02 22:18:16,468 INFO L853 garLoopResultBuilder]: At program point L23-3(line 23) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (= ULTIMATE.start_main_~v~0 0)) [2021-11-02 22:18:16,468 INFO L857 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2021-11-02 22:18:16,468 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-11-02 22:18:16,469 INFO L853 garLoopResultBuilder]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:18:16,469 INFO L857 garLoopResultBuilder]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2021-11-02 22:18:16,469 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-02 22:18:16,469 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:18:16,469 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:18:16,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:18:16,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-11-02 22:18:16,470 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2021-11-02 22:18:16,470 INFO L853 garLoopResultBuilder]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:18:16,471 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:18:16,471 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-11-02 22:18:16,471 INFO L853 garLoopResultBuilder]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:18:16,471 INFO L860 garLoopResultBuilder]: At program point L26(lines 12 27) the Hoare annotation is: true [2021-11-02 22:18:16,472 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:18:16,472 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-02 22:18:16,472 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 1 27) the Hoare annotation is: (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (<= 10 (mod ULTIMATE.start_main_~v~0 4294967296)) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-11-02 22:18:16,476 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1] [2021-11-02 22:18:16,478 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:18:16,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:18:16 BoogieIcfgContainer [2021-11-02 22:18:16,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:18:16,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:18:16,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:18:16,499 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:18:16,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:18:12" (3/4) ... [2021-11-02 22:18:16,503 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:18:16,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-02 22:18:16,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:18:16,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:18:16,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:18:16,562 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:18:16,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:18:16,564 INFO L168 Benchmark]: Toolchain (without parser) took 5245.34 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 47.8 MB in the beginning and 82.0 MB in the end (delta: -34.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,565 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:18:16,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.09 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.6 MB in the beginning and 77.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.08 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,567 INFO L168 Benchmark]: Boogie Preprocessor took 26.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:18:16,567 INFO L168 Benchmark]: RCFGBuilder took 469.93 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 64.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,568 INFO L168 Benchmark]: TraceAbstraction took 4227.75 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 84.7 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,569 INFO L168 Benchmark]: Witness Printer took 63.52 ms. Allocated memory is still 121.6 MB. Free memory was 84.7 MB in the beginning and 82.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:16,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 63.9 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.09 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.6 MB in the beginning and 77.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.08 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 469.93 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 64.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4227.75 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 63.9 MB in the beginning and 84.7 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 63.52 ms. Allocated memory is still 121.6 MB. Free memory was 84.7 MB in the beginning and 82.0 MB in the end (delta: 2.7 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: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 95 SDslu, 116 SDs, 0 SdLazy, 86 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, InterpolantAutomatonStates: 22, 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, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 296 HoareAnnotationTreeSize, 7 FomulaSimplifications, 251 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 5 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((cond < 4 && 10 <= v % 4294967296) && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v == 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) RESULT: Ultimate proved your program to be correct! [2021-11-02 22:18:16,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd613dae-7519-4037-ba7a-9df022ba8291/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE