./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4 --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 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 --- 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-2329fc7 [2022-12-14 20:49:53,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 20:49:53,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 20:49:53,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 20:49:53,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 20:49:53,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 20:49:53,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 20:49:53,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 20:49:53,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 20:49:53,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 20:49:53,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 20:49:53,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 20:49:53,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 20:49:53,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 20:49:53,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 20:49:53,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 20:49:53,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 20:49:53,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 20:49:53,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 20:49:53,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 20:49:53,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 20:49:53,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 20:49:53,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 20:49:53,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 20:49:53,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 20:49:53,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 20:49:53,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 20:49:53,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 20:49:53,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 20:49:53,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 20:49:53,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 20:49:53,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 20:49:53,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 20:49:53,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 20:49:53,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 20:49:53,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 20:49:53,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 20:49:53,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 20:49:53,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 20:49:53,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 20:49:53,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 20:49:53,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 20:49:53,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 20:49:53,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 20:49:53,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 20:49:53,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 20:49:53,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 20:49:53,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 20:49:53,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 20:49:53,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 20:49:53,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 20:49:53,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 20:49:53,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 20:49:53,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 20:49:53,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 20:49:53,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 20:49:53,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 20:49:53,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 20:49:53,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 20:49:53,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 20:49:53,854 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 20:49:53,854 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 20:49:53,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 20:49:53,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 20:49:53,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 20:49:53,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 20:49:53,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 20:49:53,856 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 20:49:53,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 20:49:53,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 20:49:53,856 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_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 [2022-12-14 20:49:54,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 20:49:54,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 20:49:54,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 20:49:54,064 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 20:49:54,065 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 20:49:54,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2022-12-14 20:49:56,723 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 20:49:56,870 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 20:49:56,870 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2022-12-14 20:49:56,874 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/data/a873b93b5/98fa20c8e69740c8b1ecebf0ef0d30b8/FLAG776a22598 [2022-12-14 20:49:56,889 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/data/a873b93b5/98fa20c8e69740c8b1ecebf0ef0d30b8 [2022-12-14 20:49:56,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 20:49:56,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 20:49:56,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 20:49:56,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 20:49:56,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 20:49:56,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:49:56" (1/1) ... [2022-12-14 20:49:56,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691a6612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:56, skipping insertion in model container [2022-12-14 20:49:56,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:49:56" (1/1) ... [2022-12-14 20:49:56,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 20:49:56,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 20:49:57,034 WARN L237 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_974f30db-1ff4-4c1a-9fa4-752934ca7904/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2022-12-14 20:49:57,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 20:49:57,048 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 20:49:57,057 WARN L237 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_974f30db-1ff4-4c1a-9fa4-752934ca7904/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2022-12-14 20:49:57,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 20:49:57,068 INFO L208 MainTranslator]: Completed translation [2022-12-14 20:49:57,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57 WrapperNode [2022-12-14 20:49:57,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 20:49:57,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 20:49:57,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 20:49:57,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 20:49:57,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,089 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-14 20:49:57,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 20:49:57,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 20:49:57,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 20:49:57,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 20:49:57,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 20:49:57,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 20:49:57,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 20:49:57,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 20:49:57,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 20:49:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 20:49:57,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 20:49:57,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 20:49:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 20:49:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 20:49:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 20:49:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 20:49:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-14 20:49:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-14 20:49:57,221 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 20:49:57,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 20:49:57,295 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 20:49:57,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 20:49:57,304 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 20:49:57,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:49:57 BoogieIcfgContainer [2022-12-14 20:49:57,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 20:49:57,307 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 20:49:57,307 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 20:49:57,314 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 20:49:57,314 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:49:57" (1/1) ... [2022-12-14 20:49:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 20:49:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2022-12-14 20:49:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-12-14 20:49:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 20:49:57,364 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 20:49:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2022-12-14 20:49:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-14 20:49:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 20:49:57,573 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:57,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 20:49:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 22 transitions. [2022-12-14 20:49:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-12-14 20:49:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 20:49:57,837 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 20:49:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 25 transitions. [2022-12-14 20:49:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 20:49:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 20:49:58,093 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 20:49:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 25 states and 29 transitions. [2022-12-14 20:49:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-12-14 20:49:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 20:49:58,353 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 20:49:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 28 states and 32 transitions. [2022-12-14 20:49:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 20:49:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 20:49:58,597 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 20:49:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 31 states and 35 transitions. [2022-12-14 20:49:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-14 20:49:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 20:49:58,840 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 9 proven. 68 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 20:49:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 34 states and 38 transitions. [2022-12-14 20:49:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-12-14 20:49:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 20:49:59,123 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:59,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 11 proven. 90 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 20:49:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 37 states and 41 transitions. [2022-12-14 20:49:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-12-14 20:49:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 20:49:59,386 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 13 proven. 115 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 20:49:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:49:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 40 states and 44 transitions. [2022-12-14 20:49:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-12-14 20:49:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 20:49:59,687 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:49:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:49:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:49:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 15 proven. 143 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-12-14 20:50:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 43 states and 47 transitions. [2022-12-14 20:50:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 20:50:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 20:50:00,068 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:50:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 17 proven. 174 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-14 20:50:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 46 states and 50 transitions. [2022-12-14 20:50:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-12-14 20:50:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 20:50:00,417 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:50:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 19 proven. 208 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-12-14 20:50:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 49 states and 53 transitions. [2022-12-14 20:50:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-12-14 20:50:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 20:50:00,773 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:50:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 21 proven. 245 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-12-14 20:50:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 52 states and 56 transitions. [2022-12-14 20:50:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-12-14 20:50:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 20:50:01,219 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:50:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 23 proven. 285 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-12-14 20:50:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 55 states and 59 transitions. [2022-12-14 20:50:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-12-14 20:50:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 20:50:01,641 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 20:50:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 25 proven. 328 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-12-14 20:50:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 20:50:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 58 states and 62 transitions. [2022-12-14 20:50:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-12-14 20:50:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 20:50:02,064 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 20:50:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 20:50:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:50:02,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 20:50:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:50:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:50:02,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 20:50:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 20:50:02,180 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2022-12-14 20:50:02,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 08:50:02 ImpRootNode [2022-12-14 20:50:02,221 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 20:50:02,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 20:50:02,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 20:50:02,222 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 20:50:02,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:49:57" (3/4) ... [2022-12-14 20:50:02,224 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 20:50:02,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 20:50:02,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 20:50:02,276 INFO L158 Benchmark]: Toolchain (without parser) took 5383.13ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 104.3MB in the beginning and 102.4MB in the end (delta: 1.9MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,276 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 20:50:02,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.52ms. Allocated memory is still 138.4MB. Free memory was 103.9MB in the beginning and 94.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.62ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,277 INFO L158 Benchmark]: Boogie Preprocessor took 11.32ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 92.0MB in the end (delta: 897.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 20:50:02,278 INFO L158 Benchmark]: RCFGBuilder took 204.47ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 82.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,279 INFO L158 Benchmark]: CodeCheck took 4914.25ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 82.5MB in the beginning and 105.6MB in the end (delta: -23.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,280 INFO L158 Benchmark]: Witness Printer took 53.76ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 102.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 20:50:02,283 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 16, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 944 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 1147 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 939 mSDsCounter, 576 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3958 IncrementalHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 576 mSolverCounterUnsat, 208 mSDtfsCounter, 3958 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9233 GetRequests, 8913 SyntacticMatches, 226 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 2138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1379/3150 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 15; VAL [input=15] [L13] CALL, EXPR id(input) VAL [\old(x)=15] [L7] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L8] CALL, EXPR id(x-1) VAL [\old(x)=14] [L7] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L8] CALL, EXPR id(x-1) VAL [\old(x)=13] [L7] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L8] CALL, EXPR id(x-1) VAL [\old(x)=12] [L7] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L8] CALL, EXPR id(x-1) VAL [\old(x)=11] [L7] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L8] CALL, EXPR id(x-1) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [id(input)=15, input=15] [L13] int result = id(input); [L14] COND TRUE result == 15 VAL [input=15, result=15] [L15] reach_error() VAL [input=15, result=15] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.52ms. Allocated memory is still 138.4MB. Free memory was 103.9MB in the beginning and 94.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.62ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 92.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.32ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 92.0MB in the end (delta: 897.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.47ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 82.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4914.25ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 82.5MB in the beginning and 105.6MB in the end (delta: -23.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 53.76ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 102.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 20:50:02,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974f30db-1ff4-4c1a-9fa4-752934ca7904/bin/ukojak-rkRKPMF4O4/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE