./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.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_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/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_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/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_042e835f-b0ba-434b-96e3-90c470470c69/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 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 --- 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 17:58:39,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 17:58:39,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 17:58:39,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 17:58:39,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 17:58:39,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 17:58:39,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 17:58:39,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 17:58:39,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 17:58:39,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 17:58:39,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 17:58:39,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 17:58:39,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 17:58:39,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 17:58:39,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 17:58:39,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 17:58:39,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 17:58:39,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 17:58:39,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 17:58:39,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 17:58:39,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 17:58:39,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 17:58:39,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 17:58:39,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 17:58:39,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 17:58:39,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 17:58:39,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 17:58:39,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 17:58:39,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 17:58:39,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 17:58:39,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 17:58:39,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 17:58:39,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 17:58:39,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 17:58:39,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 17:58:39,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 17:58:39,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 17:58:39,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 17:58:39,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 17:58:39,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 17:58:39,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 17:58:39,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 17:58:39,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 17:58:39,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 17:58:39,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 17:58:39,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 17:58:39,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 17:58:39,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 17:58:39,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 17:58:39,213 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 17:58:39,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 17:58:39,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 17:58:39,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 17:58:39,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 17:58:39,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 17:58:39,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 17:58:39,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 17:58:39,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 17:58:39,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 17:58:39,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 17:58:39,215 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 17:58:39,215 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 17:58:39,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 17:58:39,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 17:58:39,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 17:58:39,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 17:58:39,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 17:58:39,217 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 17:58:39,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 17:58:39,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 17:58:39,217 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_042e835f-b0ba-434b-96e3-90c470470c69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 [2022-12-14 17:58:39,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 17:58:39,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 17:58:39,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 17:58:39,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 17:58:39,456 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 17:58:39,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2022-12-14 17:58:42,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 17:58:42,233 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 17:58:42,234 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2022-12-14 17:58:42,238 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/data/ef0a95440/26ae95774e8445fa80b74d4bba13e0a4/FLAG8c05425f8 [2022-12-14 17:58:42,634 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/data/ef0a95440/26ae95774e8445fa80b74d4bba13e0a4 [2022-12-14 17:58:42,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 17:58:42,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 17:58:42,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 17:58:42,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 17:58:42,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 17:58:42,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf4730b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42, skipping insertion in model container [2022-12-14 17:58:42,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 17:58:42,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 17:58:42,758 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_042e835f-b0ba-434b-96e3-90c470470c69/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2022-12-14 17:58:42,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 17:58:42,768 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 17:58:42,778 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_042e835f-b0ba-434b-96e3-90c470470c69/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2022-12-14 17:58:42,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 17:58:42,787 INFO L208 MainTranslator]: Completed translation [2022-12-14 17:58:42,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42 WrapperNode [2022-12-14 17:58:42,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 17:58:42,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 17:58:42,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 17:58:42,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 17:58:42,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,809 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-14 17:58:42,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 17:58:42,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 17:58:42,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 17:58:42,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 17:58:42,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 17:58:42,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 17:58:42,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 17:58:42,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 17:58:42,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:42" (1/1) ... [2022-12-14 17:58:42,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 17:58:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 17:58:42,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 17:58:42,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 17:58:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 17:58:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 17:58:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-12-14 17:58:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-12-14 17:58:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 17:58:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 17:58:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-14 17:58:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-14 17:58:42,932 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 17:58:42,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 17:58:43,009 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 17:58:43,023 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 17:58:43,024 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 17:58:43,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:58:43 BoogieIcfgContainer [2022-12-14 17:58:43,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 17:58:43,027 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 17:58:43,028 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 17:58:43,038 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 17:58:43,038 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:58:43" (1/1) ... [2022-12-14 17:58:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 17:58:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2022-12-14 17:58:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 17:58:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 17:58:43,100 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:43,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:43,257 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 17:58:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2022-12-14 17:58:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 17:58:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 17:58:43,324 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:43,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:43,470 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 17:58:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2022-12-14 17:58:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-12-14 17:58:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 17:58:43,655 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 17:58:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2022-12-14 17:58:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2022-12-14 17:58:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 17:58:44,081 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 17:58:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2022-12-14 17:58:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2022-12-14 17:58:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 17:58:44,442 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:44,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 17:58:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2022-12-14 17:58:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2022-12-14 17:58:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 17:58:44,613 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 17:58:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2022-12-14 17:58:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2022-12-14 17:58:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 17:58:45,008 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 17:58:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 17:58:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 17:58:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2022-12-14 17:58:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2022-12-14 17:58:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 17:58:45,188 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 17:58:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 17:58:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 17:58:45,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 17:58:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 17:58:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 17:58:45,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 17:58:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 17:58:45,271 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2022-12-14 17:58:45,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 05:58:45 ImpRootNode [2022-12-14 17:58:45,293 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 17:58:45,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 17:58:45,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 17:58:45,293 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 17:58:45,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:58:43" (3/4) ... [2022-12-14 17:58:45,295 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 17:58:45,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 17:58:45,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 17:58:45,327 INFO L158 Benchmark]: Toolchain (without parser) took 2690.61ms. Allocated memory is still 127.9MB. Free memory was 96.8MB in the beginning and 67.4MB in the end (delta: 29.4MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,328 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 17:58:45,328 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.30ms. Allocated memory is still 127.9MB. Free memory was 96.4MB in the beginning and 86.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.02ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,329 INFO L158 Benchmark]: Boogie Preprocessor took 11.53ms. Allocated memory is still 127.9MB. Free memory was 85.0MB in the beginning and 84.2MB in the end (delta: 807.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 17:58:45,329 INFO L158 Benchmark]: RCFGBuilder took 204.81ms. Allocated memory is still 127.9MB. Free memory was 84.2MB in the beginning and 74.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,330 INFO L158 Benchmark]: CodeCheck took 2265.32ms. Allocated memory is still 127.9MB. Free memory was 74.1MB in the beginning and 70.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,330 INFO L158 Benchmark]: Witness Printer took 33.79ms. Allocated memory is still 127.9MB. Free memory was 70.6MB in the beginning and 67.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 17:58:45,333 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 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1018 IncrementalHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 165 mSDtfsCounter, 1018 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1693 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 32/64 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int input = 5; VAL [input=5] [L21] CALL, EXPR id(input) VAL [\old(x)=5] [L10] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=4] [L15] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L16] CALL, EXPR id(x-1) VAL [\old(x)=3] [L10] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=2] [L15] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L16] CALL, EXPR id(x-1) VAL [\old(x)=1] [L10] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=0] [L15] COND TRUE x==0 [L15] return 0; VAL [\old(x)=0, \result=0, x=0] [L11] RET, EXPR id2(x-1) VAL [\old(x)=1, id2(x-1)=0, x=1] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=3, id2(x-1)=2, x=3] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=5, id2(x-1)=4, x=5] [L11] return id2(x-1) + 1; [L21] RET, EXPR id(input) VAL [id(input)=5, input=5] [L21] int result = id(input); [L22] COND TRUE result == 5 VAL [input=5, result=5] [L23] reach_error() VAL [input=5, result=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.30ms. Allocated memory is still 127.9MB. Free memory was 96.4MB in the beginning and 86.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.02ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.53ms. Allocated memory is still 127.9MB. Free memory was 85.0MB in the beginning and 84.2MB in the end (delta: 807.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.81ms. Allocated memory is still 127.9MB. Free memory was 84.2MB in the beginning and 74.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2265.32ms. Allocated memory is still 127.9MB. Free memory was 74.1MB in the beginning and 70.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 33.79ms. Allocated memory is still 127.9MB. Free memory was 70.6MB in the beginning and 67.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 17:58:45,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042e835f-b0ba-434b-96e3-90c470470c69/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