./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/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 80b250f44ccc89442200d93f4bf6653c7aad36a18be4f80bda8f239187e0714d --- 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 16:51:15,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:51:15,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:51:15,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:51:15,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:51:15,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:51:15,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:51:15,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:51:15,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:51:15,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:51:15,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:51:15,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:51:15,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:51:15,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:51:15,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:51:15,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:51:15,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:51:15,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:51:15,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:51:15,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:51:15,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:51:15,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:51:15,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:51:15,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:51:15,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:51:15,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:51:15,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:51:15,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:51:15,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:51:15,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:51:15,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:51:15,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:51:15,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:51:15,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:51:15,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:51:15,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:51:15,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:51:15,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:51:15,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:51:15,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:51:15,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:51:15,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:51:15,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:51:15,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:51:15,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:51:15,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:51:15,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:51:15,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:51:15,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:51:15,804 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:51:15,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:51:15,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:51:15,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:51:15,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:51:15,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:51:15,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:51:15,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:51:15,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:51:15,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:51:15,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:51:15,809 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:51:15,809 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:51:15,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:51:15,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:15,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:51:15,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:51:15,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:51:15,811 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:51:15,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:51:15,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:51:15,813 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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80b250f44ccc89442200d93f4bf6653c7aad36a18be4f80bda8f239187e0714d [2022-10-17 16:51:16,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:51:16,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:51:16,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:51:16,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:51:16,134 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:51:16,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2022-10-17 16:51:16,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/data/cea186753/2d20da8381404c10946cfd7f215ca972/FLAGecd31e0f8 [2022-10-17 16:51:16,708 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:51:16,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2022-10-17 16:51:16,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/data/cea186753/2d20da8381404c10946cfd7f215ca972/FLAGecd31e0f8 [2022-10-17 16:51:17,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/data/cea186753/2d20da8381404c10946cfd7f215ca972 [2022-10-17 16:51:17,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:51:17,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:51:17,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:17,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:51:17,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:51:17,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d77d6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17, skipping insertion in model container [2022-10-17 16:51:17,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:51:17,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:51:17,304 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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c[454,467] [2022-10-17 16:51:17,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:17,318 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:51:17,335 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_9de9cf64-30d5-4d82-85ba-e8119cb9162a/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c[454,467] [2022-10-17 16:51:17,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:17,352 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:51:17,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17 WrapperNode [2022-10-17 16:51:17,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:17,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:17,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:51:17,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:51:17,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,390 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-17 16:51:17,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:17,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:51:17,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:51:17,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:51:17,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:51:17,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:51:17,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:51:17,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:51:17,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:51:17,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:51:17,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:51:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:51:17,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:51:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:51:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:51:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-17 16:51:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-17 16:51:17,587 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:51:17,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:51:17,719 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:51:17,735 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:51:17,736 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:51:17,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:51:17 BoogieIcfgContainer [2022-10-17 16:51:17,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:51:17,740 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:51:17,740 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:51:17,752 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:51:17,753 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:51:17" (1/1) ... [2022-10-17 16:51:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:51:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2022-10-17 16:51:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-10-17 16:51:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:51:17,836 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:18,062 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 16:51:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2022-10-17 16:51:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-10-17 16:51:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 16:51:18,170 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:18,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:51:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2022-10-17 16:51:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-10-17 16:51:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 16:51:18,801 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:18,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 16:51:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2022-10-17 16:51:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2022-10-17 16:51:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 16:51:19,394 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 16:51:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2022-10-17 16:51:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2022-10-17 16:51:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 16:51:20,108 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:20,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 16:51:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 38 states and 70 transitions. [2022-10-17 16:51:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2022-10-17 16:51:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 16:51:20,757 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 16:51:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 43 states and 87 transitions. [2022-10-17 16:51:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 87 transitions. [2022-10-17 16:51:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 16:51:21,369 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:21,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-17 16:51:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 48 states and 106 transitions. [2022-10-17 16:51:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 106 transitions. [2022-10-17 16:51:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 16:51:22,078 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-17 16:51:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 53 states and 127 transitions. [2022-10-17 16:51:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions. [2022-10-17 16:51:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 16:51:22,933 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:22,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 16:51:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 58 states and 150 transitions. [2022-10-17 16:51:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 150 transitions. [2022-10-17 16:51:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 16:51:23,765 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-10-17 16:51:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 63 states and 175 transitions. [2022-10-17 16:51:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 175 transitions. [2022-10-17 16:51:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-17 16:51:24,701 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-17 16:51:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 68 states and 202 transitions. [2022-10-17 16:51:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 202 transitions. [2022-10-17 16:51:25,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-17 16:51:25,631 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:25,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-17 16:51:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 73 states and 231 transitions. [2022-10-17 16:51:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 231 transitions. [2022-10-17 16:51:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-17 16:51:26,614 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-10-17 16:51:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 78 states and 262 transitions. [2022-10-17 16:51:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 262 transitions. [2022-10-17 16:51:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-17 16:51:27,700 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:27,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-10-17 16:51:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 83 states and 295 transitions. [2022-10-17 16:51:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 295 transitions. [2022-10-17 16:51:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 16:51:28,882 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-10-17 16:51:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 88 states and 330 transitions. [2022-10-17 16:51:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 330 transitions. [2022-10-17 16:51:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-17 16:51:30,124 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-10-17 16:51:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 93 states and 367 transitions. [2022-10-17 16:51:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 367 transitions. [2022-10-17 16:51:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-17 16:51:31,390 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-10-17 16:51:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 98 states and 406 transitions. [2022-10-17 16:51:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 406 transitions. [2022-10-17 16:51:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 16:51:32,743 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:32,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-10-17 16:51:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 103 states and 447 transitions. [2022-10-17 16:51:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 447 transitions. [2022-10-17 16:51:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:51:34,064 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-10-17 16:51:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 108 states and 490 transitions. [2022-10-17 16:51:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 490 transitions. [2022-10-17 16:51:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 16:51:35,588 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-10-17 16:51:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 113 states and 535 transitions. [2022-10-17 16:51:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 535 transitions. [2022-10-17 16:51:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-17 16:51:37,167 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:51:37,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:51:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:51:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:51:37,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:51:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:51:37,405 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2022-10-17 16:51:37,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:51:37 ImpRootNode [2022-10-17 16:51:37,465 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:51:37,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:51:37,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:51:37,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:51:37,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:51:17" (3/4) ... [2022-10-17 16:51:37,469 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:51:37,597 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:51:37,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:51:37,599 INFO L158 Benchmark]: Toolchain (without parser) took 20507.38ms. Allocated memory was 98.6MB in the beginning and 323.0MB in the end (delta: 224.4MB). Free memory was 76.3MB in the beginning and 183.9MB in the end (delta: -107.6MB). Peak memory consumption was 116.7MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,600 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:51:37,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.26ms. Allocated memory is still 98.6MB. Free memory was 76.2MB in the beginning and 74.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.41ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 73.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,602 INFO L158 Benchmark]: Boogie Preprocessor took 22.35ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 72.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:51:37,603 INFO L158 Benchmark]: RCFGBuilder took 324.88ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 62.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,604 INFO L158 Benchmark]: CodeCheck took 19725.38ms. Allocated memory was 98.6MB in the beginning and 323.0MB in the end (delta: 224.4MB). Free memory was 62.8MB in the beginning and 187.1MB in the end (delta: -124.3MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,605 INFO L158 Benchmark]: Witness Printer took 131.86ms. Allocated memory is still 323.0MB. Free memory was 187.1MB in the beginning and 183.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:51:37,609 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: 19.6s, OverallIterations: 21, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2238 SdHoareTripleChecker+Valid, 21.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1579 mSDsluCounter, 1972 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1560 mSDsCounter, 1642 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16161 IncrementalHoareTripleChecker+Invalid, 17803 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1642 mSolverCounterUnsat, 412 mSDtfsCounter, 16161 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28403 GetRequests, 28165 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21804 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 3360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 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 = 20; VAL [input=20] [L13] CALL, EXPR id(input) VAL [\old(x)=20] [L7] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L8] CALL, EXPR id(x-1) VAL [\old(x)=19] [L7] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L8] CALL, EXPR id(x-1) VAL [\old(x)=18] [L7] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L8] CALL, EXPR id(x-1) VAL [\old(x)=17] [L7] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L8] CALL, EXPR id(x-1) VAL [\old(x)=16] [L7] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L8] CALL, EXPR id(x-1) 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; [L8] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [id(input)=20, input=20] [L13] int result = id(input); [L14] COND TRUE result == 20 VAL [input=20, result=20] [L15] reach_error() VAL [input=20, result=20] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.26ms. Allocated memory is still 98.6MB. Free memory was 76.2MB in the beginning and 74.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.41ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 73.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.35ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 72.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.88ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 62.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 19725.38ms. Allocated memory was 98.6MB in the beginning and 323.0MB in the end (delta: 224.4MB). Free memory was 62.8MB in the beginning and 187.1MB in the end (delta: -124.3MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. * Witness Printer took 131.86ms. Allocated memory is still 323.0MB. Free memory was 187.1MB in the beginning and 183.9MB 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! [2022-10-17 16:51:37,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de9cf64-30d5-4d82-85ba-e8119cb9162a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE