./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invariants/even.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:38:20,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:38:20,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:38:20,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:38:20,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:38:20,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:38:20,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:38:20,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:38:20,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:38:20,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:38:20,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:38:20,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:38:20,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:38:20,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:38:20,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:38:20,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:38:20,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:38:20,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:38:20,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:38:20,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:38:20,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:38:20,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:38:20,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:38:20,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:38:20,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:38:20,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:38:20,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:38:20,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:38:20,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:38:20,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:38:20,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:38:20,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:38:20,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:38:20,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:38:20,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:38:20,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:38:20,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:38:20,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:38:20,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:38:20,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:38:20,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:38:20,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:38:20,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:38:20,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:38:20,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:38:20,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:38:20,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:38:20,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:38:20,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:38:20,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:38:20,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:38:20,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:38:20,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:38:20,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:38:20,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:38:20,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:38:20,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:38:20,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:38:20,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:38:20,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:38:20,523 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:38:20,524 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:38:20,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:38:20,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:38:20,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:38:20,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:38:20,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:38:20,525 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:38:20,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:38:20,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:38:20,526 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_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 907de60c76ba721f5ee8090b571387619e8ea4f2c3c4961a16da0916b80c691f [2022-10-17 16:38:20,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:38:20,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:38:20,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:38:20,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:38:20,877 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:38:20,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/loop-invariants/even.c [2022-10-17 16:38:20,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/data/2ff814bd2/ece00612f7bc46f68ca84c8e6df1feda/FLAG264fdba59 [2022-10-17 16:38:21,402 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:38:21,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/sv-benchmarks/c/loop-invariants/even.c [2022-10-17 16:38:21,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/data/2ff814bd2/ece00612f7bc46f68ca84c8e6df1feda/FLAG264fdba59 [2022-10-17 16:38:21,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/data/2ff814bd2/ece00612f7bc46f68ca84c8e6df1feda [2022-10-17 16:38:21,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:38:21,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:38:21,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:38:21,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:38:21,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:38:21,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:38:21" (1/1) ... [2022-10-17 16:38:21,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfb644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:21, skipping insertion in model container [2022-10-17 16:38:21,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:38:21" (1/1) ... [2022-10-17 16:38:21,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:38:21,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:38:22,018 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_7b600d08-9d3f-4a64-a3cf-fde8654aba69/sv-benchmarks/c/loop-invariants/even.c[351,364] [2022-10-17 16:38:22,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:38:22,052 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:38:22,063 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_7b600d08-9d3f-4a64-a3cf-fde8654aba69/sv-benchmarks/c/loop-invariants/even.c[351,364] [2022-10-17 16:38:22,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:38:22,079 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:38:22,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22 WrapperNode [2022-10-17 16:38:22,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:38:22,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:38:22,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:38:22,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:38:22,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,126 INFO L138 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-10-17 16:38:22,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:38:22,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:38:22,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:38:22,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:38:22,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:38:22,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:38:22,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:38:22,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:38:22,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:38:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:38:22,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:38:22,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:38:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:38:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:38:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:38:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:38:22,272 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:38:22,275 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:38:22,371 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:38:22,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:38:22,392 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 16:38:22,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:22 BoogieIcfgContainer [2022-10-17 16:38:22,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:38:22,396 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:38:22,396 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:38:22,406 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:38:22,406 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:22" (1/1) ... [2022-10-17 16:38:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:38:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2022-10-17 16:38:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2022-10-17 16:38:22,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 16:38:22,480 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:22,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:38:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-10-17 16:38:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-10-17 16:38:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 16:38:22,687 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:38:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2022-10-17 16:38:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-10-17 16:38:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 16:38:22,999 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:38:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2022-10-17 16:38:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-10-17 16:38:23,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 16:38:23,443 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2022-10-17 16:38:23,458 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2022-10-17 16:38:23,501 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2022-10-17 16:38:23,506 INFO L560 CodeCheckObserver]: Invariant with dag size 11 [2022-10-17 16:38:23,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:38:23 ImpRootNode [2022-10-17 16:38:23,519 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:38:23,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:38:23,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:38:23,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:38:23,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:22" (3/4) ... [2022-10-17 16:38:23,526 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 16:38:23,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-10-17 16:38:23,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-10-17 16:38:23,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 16:38:23,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 16:38:23,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 16:38:23,576 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:38:23,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:38:23,577 INFO L158 Benchmark]: Toolchain (without parser) took 1767.98ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 48.1MB in the beginning and 77.4MB in the end (delta: -29.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:38:23,578 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:38:23,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.05ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 47.9MB in the beginning and 84.9MB in the end (delta: -37.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:38:23,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.47ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:38:23,580 INFO L158 Benchmark]: Boogie Preprocessor took 19.10ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 82.7MB in the end (delta: 987.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:38:23,581 INFO L158 Benchmark]: RCFGBuilder took 246.10ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 72.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 16:38:23,582 INFO L158 Benchmark]: CodeCheck took 1122.93ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 79.3MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:38:23,582 INFO L158 Benchmark]: Witness Printer took 56.19ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 77.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:38:23,587 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.2s 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 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 <= x / 2 * 2 && !(x / 2 <= 0)) || x == 0 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.05ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 47.9MB in the beginning and 84.9MB in the end (delta: -37.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.47ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.10ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 82.7MB in the end (delta: 987.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.10ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 72.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1122.93ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 79.3MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.19ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 77.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2022-10-17 16:38:23,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b600d08-9d3f-4a64-a3cf-fde8654aba69/bin/ukojak-92XMlrwhuB/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