./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/even.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invariants/even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 907de60c76ba721f5ee8090b571387619e8ea4f2c3c4961a16da0916b80c691f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:52:34,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:52:34,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:52:34,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:52:34,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:52:34,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:52:34,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:52:34,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:52:34,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:52:34,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:52:34,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:52:34,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:52:34,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:52:34,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:52:34,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:52:34,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:52:34,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:52:34,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:52:34,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:52:34,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:52:34,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:52:34,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:52:34,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:52:34,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:52:34,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:52:34,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:52:34,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:52:34,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:52:34,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:52:34,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:52:34,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:52:34,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:52:34,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:52:34,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:52:34,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:52:34,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:52:34,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:52:34,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:52:34,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:52:34,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:52:34,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:52:34,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 15:52:34,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:52:34,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:52:34,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 15:52:34,616 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 15:52:34,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:52:34,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:52:34,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:52:34,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:52:34,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:52:34,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:52:34,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:52:34,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 15:52:34,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:52:34,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 15:52:34,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:52:34,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 15:52:34,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:52:34,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 15:52:34,621 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:52:34,621 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:52:34,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:52:34,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:52:34,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:52:34,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:52:34,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 15:52:34,623 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 15:52:34,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 15:52:34,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 15:52:34,624 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_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 907de60c76ba721f5ee8090b571387619e8ea4f2c3c4961a16da0916b80c691f [2021-11-23 15:52:34,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:52:34,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:52:34,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:52:34,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:52:34,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:52:34,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/loop-invariants/even.c [2021-11-23 15:52:35,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/data/0b4b097b3/ec8c3ed6e78149a29d64955bff68528b/FLAG5f63d3dfb [2021-11-23 15:52:35,457 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:52:35,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/sv-benchmarks/c/loop-invariants/even.c [2021-11-23 15:52:35,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/data/0b4b097b3/ec8c3ed6e78149a29d64955bff68528b/FLAG5f63d3dfb [2021-11-23 15:52:35,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/data/0b4b097b3/ec8c3ed6e78149a29d64955bff68528b [2021-11-23 15:52:35,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:52:35,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:52:35,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:52:35,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:52:35,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:52:35,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:35" (1/1) ... [2021-11-23 15:52:35,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da220ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:35, skipping insertion in model container [2021-11-23 15:52:35,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:35" (1/1) ... [2021-11-23 15:52:35,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:52:35,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:52:36,088 WARN L230 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_6c2d789b-6325-4add-af85-3539df612e00/sv-benchmarks/c/loop-invariants/even.c[351,364] [2021-11-23 15:52:36,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:52:36,112 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:52:36,134 WARN L230 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_6c2d789b-6325-4add-af85-3539df612e00/sv-benchmarks/c/loop-invariants/even.c[351,364] [2021-11-23 15:52:36,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:52:36,153 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:52:36,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36 WrapperNode [2021-11-23 15:52:36,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:52:36,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:52:36,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:52:36,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:52:36,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,200 INFO L137 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-11-23 15:52:36,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:52:36,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:52:36,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:52:36,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:52:36,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:52:36,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:52:36,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:52:36,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:52:36,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:52:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:52:36,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:52:36,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:52:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 15:52:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:52:36,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:52:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 15:52:36,383 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:52:36,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:52:36,478 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 15:52:36,490 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 15:52:36,491 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 15:52:36,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:36 BoogieIcfgContainer [2021-11-23 15:52:36,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 15:52:36,494 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 15:52:36,495 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 15:52:36,505 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 15:52:36,505 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:36" (1/1) ... [2021-11-23 15:52:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 15:52:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:52:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2021-11-23 15:52:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-23 15:52:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 15:52:36,573 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 15:52:36,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 15:52:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 15:52:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 15:52:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:52:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 15:52:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 15:52:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 15:52:36,806 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 15:52:36,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 15:52:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 15:52:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 15:52:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:52:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2021-11-23 15:52:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-23 15:52:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 15:52:36,993 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 15:52:36,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 15:52:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 15:52:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 15:52:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 15:52:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2021-11-23 15:52:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-23 15:52:37,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 15:52:37,243 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2021-11-23 15:52:37,253 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-23 15:52:37,297 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 15:52:37,301 INFO L560 CodeCheckObserver]: Invariant with dag size 10 [2021-11-23 15:52:37,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 03:52:37 ImpRootNode [2021-11-23 15:52:37,312 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 15:52:37,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 15:52:37,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 15:52:37,313 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 15:52:37,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:36" (3/4) ... [2021-11-23 15:52:37,318 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 15:52:37,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-23 15:52:37,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 15:52:37,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 15:52:37,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 15:52:37,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 15:52:37,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/witness.graphml [2021-11-23 15:52:37,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 15:52:37,386 INFO L158 Benchmark]: Toolchain (without parser) took 1529.81ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 42.2MB in the end (delta: 26.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,387 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 49.5MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:52:37,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.60ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 79.4MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.53ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 77.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,388 INFO L158 Benchmark]: Boogie Preprocessor took 31.59ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:52:37,389 INFO L158 Benchmark]: RCFGBuilder took 259.54ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 68.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,389 INFO L158 Benchmark]: CodeCheck took 817.73ms. Allocated memory is still 102.8MB. Free memory was 68.0MB in the beginning and 45.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,390 INFO L158 Benchmark]: Witness Printer took 72.61ms. Allocated memory is still 102.8MB. Free memory was 45.3MB in the beginning and 42.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 15:52:37,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 29 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (x <= 2 * (x / 2) && 0 < x / 2) || x == 0 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 49.5MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.60ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 79.4MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.53ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 77.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.59ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.54ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 68.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 817.73ms. Allocated memory is still 102.8MB. Free memory was 68.0MB in the beginning and 45.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 72.61ms. Allocated memory is still 102.8MB. Free memory was 45.3MB in the beginning and 42.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 15:52:37,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c2d789b-6325-4add-af85-3539df612e00/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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