./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg --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 b3da85103e65fd13a584e838d8b961878044a0a70e09ad1788e3ca53a404f357 --- 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-b5237d8 [2022-11-21 23:46:39,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 23:46:39,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 23:46:39,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 23:46:39,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 23:46:39,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 23:46:39,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 23:46:39,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 23:46:39,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 23:46:39,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 23:46:39,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 23:46:39,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 23:46:39,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 23:46:39,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 23:46:39,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 23:46:39,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 23:46:39,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 23:46:39,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 23:46:39,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 23:46:39,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 23:46:39,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 23:46:39,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 23:46:39,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 23:46:39,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 23:46:39,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 23:46:39,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 23:46:39,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 23:46:39,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 23:46:39,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 23:46:39,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 23:46:39,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 23:46:39,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 23:46:39,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 23:46:39,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 23:46:39,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 23:46:39,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 23:46:39,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 23:46:39,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 23:46:39,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 23:46:39,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 23:46:39,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 23:46:39,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-11-21 23:46:39,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 23:46:39,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 23:46:39,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 23:46:39,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-21 23:46:39,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 23:46:39,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 23:46:39,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 23:46:39,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 23:46:39,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 23:46:39,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 23:46:39,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 23:46:39,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 23:46:39,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 23:46:39,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 23:46:39,963 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 23:46:39,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 23:46:39,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 23:46:39,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 23:46:39,964 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-21 23:46:39,964 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-21 23:46:39,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 23:46:39,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-21 23:46:39,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 23:46:39,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 23:46:39,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 23:46:39,965 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-21 23:46:39,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 23:46:39,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 23:46:39,966 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_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3da85103e65fd13a584e838d8b961878044a0a70e09ad1788e3ca53a404f357 [2022-11-21 23:46:40,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 23:46:40,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 23:46:40,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 23:46:40,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 23:46:40,309 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 23:46:40,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/../../sv-benchmarks/c/loops/invert_string-1.c [2022-11-21 23:46:43,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 23:46:43,619 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 23:46:43,619 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/sv-benchmarks/c/loops/invert_string-1.c [2022-11-21 23:46:43,625 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/data/da3e1d29b/f46997363e14446cb3afa95d9b1629f1/FLAG45048bac6 [2022-11-21 23:46:43,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/data/da3e1d29b/f46997363e14446cb3afa95d9b1629f1 [2022-11-21 23:46:43,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 23:46:43,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 23:46:43,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 23:46:43,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 23:46:43,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 23:46:43,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6968ac27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43, skipping insertion in model container [2022-11-21 23:46:43,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 23:46:43,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 23:46:43,823 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_77c10943-f274-4719-9f3a-768165bf9c51/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2022-11-21 23:46:43,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 23:46:43,849 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 23:46:43,858 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_77c10943-f274-4719-9f3a-768165bf9c51/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2022-11-21 23:46:43,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 23:46:43,878 INFO L208 MainTranslator]: Completed translation [2022-11-21 23:46:43,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43 WrapperNode [2022-11-21 23:46:43,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 23:46:43,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 23:46:43,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 23:46:43,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 23:46:43,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,914 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2022-11-21 23:46:43,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 23:46:43,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 23:46:43,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 23:46:43,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 23:46:43,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 23:46:43,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 23:46:43,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 23:46:43,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 23:46:43,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 11:46:43" (1/1) ... [2022-11-21 23:46:43,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-21 23:46:43,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/z3 [2022-11-21 23:46:43,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-21 23:46:44,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-21 23:46:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 23:46:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 23:46:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 23:46:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 23:46:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 23:46:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 23:46:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 23:46:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 23:46:44,117 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 23:46:44,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 23:46:44,256 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 23:46:44,320 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 23:46:44,320 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 23:46:44,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:46:44 BoogieIcfgContainer [2022-11-21 23:46:44,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 23:46:44,326 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-21 23:46:44,327 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-21 23:46:44,337 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-21 23:46:44,338 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:46:44" (1/1) ... [2022-11-21 23:46:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 23:46:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2022-11-21 23:46:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2022-11-21 23:46:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 23:46:44,447 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2022-11-21 23:46:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2022-11-21 23:46:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 23:46:44,931 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 23:46:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 11 states and 14 transitions. [2022-11-21 23:46:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2022-11-21 23:46:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 23:46:45,202 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 17 states and 29 transitions. [2022-11-21 23:46:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 29 transitions. [2022-11-21 23:46:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 23:46:46,831 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:46,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 19 states and 33 transitions. [2022-11-21 23:46:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 33 transitions. [2022-11-21 23:46:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 23:46:47,757 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 20 states and 34 transitions. [2022-11-21 23:46:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 34 transitions. [2022-11-21 23:46:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 23:46:48,156 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 25 states and 48 transitions. [2022-11-21 23:46:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 48 transitions. [2022-11-21 23:46:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 23:46:50,801 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:50,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 27 states and 55 transitions. [2022-11-21 23:46:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 55 transitions. [2022-11-21 23:46:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 23:46:51,845 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 28 states and 56 transitions. [2022-11-21 23:46:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 56 transitions. [2022-11-21 23:46:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 23:46:52,376 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 23:46:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 34 states and 68 transitions. [2022-11-21 23:46:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 68 transitions. [2022-11-21 23:46:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 23:46:54,217 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 31 states and 55 transitions. [2022-11-21 23:46:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 55 transitions. [2022-11-21 23:46:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 23:46:55,050 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:55,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:46:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:46:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:46:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 37 states and 70 transitions. [2022-11-21 23:46:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 70 transitions. [2022-11-21 23:46:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 23:46:59,834 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:46:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:46:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:47:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:47:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:47:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 38 states and 74 transitions. [2022-11-21 23:47:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2022-11-21 23:47:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 23:47:01,370 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:47:01,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:47:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:47:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:47:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:47:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 39 states and 74 transitions. [2022-11-21 23:47:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2022-11-21 23:47:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 23:47:01,989 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:47:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:47:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 23:47:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 23:47:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 23:47:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 40 states and 75 transitions. [2022-11-21 23:47:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 75 transitions. [2022-11-21 23:47:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 23:47:02,605 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 23:47:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 23:47:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 23:47:02,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 23:47:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 23:47:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 23:47:02,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 23:47:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 23:47:02,817 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 15 iterations. [2022-11-21 23:47:02,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 11:47:02 ImpRootNode [2022-11-21 23:47:02,879 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-21 23:47:02,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 23:47:02,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 23:47:02,880 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 23:47:02,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 11:46:44" (3/4) ... [2022-11-21 23:47:02,883 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 23:47:02,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c10943-f274-4719-9f3a-768165bf9c51/bin/ukojak-jW3SillKbg/witness.graphml [2022-11-21 23:47:02,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 23:47:02,978 INFO L158 Benchmark]: Toolchain (without parser) took 19334.37ms. Allocated memory was 153.1MB in the beginning and 237.0MB in the end (delta: 83.9MB). Free memory was 120.4MB in the beginning and 176.3MB in the end (delta: -55.9MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-11-21 23:47:02,978 INFO L158 Benchmark]: CDTParser took 0.88ms. Allocated memory is still 153.1MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 23:47:02,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.59ms. Allocated memory is still 153.1MB. Free memory was 120.4MB in the beginning and 110.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 23:47:02,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.60ms. Allocated memory is still 153.1MB. Free memory was 110.1MB in the beginning and 108.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 23:47:02,980 INFO L158 Benchmark]: Boogie Preprocessor took 22.49ms. Allocated memory is still 153.1MB. Free memory was 108.4MB in the beginning and 107.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 23:47:02,981 INFO L158 Benchmark]: RCFGBuilder took 384.71ms. Allocated memory is still 153.1MB. Free memory was 107.2MB in the beginning and 92.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 23:47:02,981 INFO L158 Benchmark]: CodeCheck took 18552.93ms. Allocated memory was 153.1MB in the beginning and 237.0MB in the end (delta: 83.9MB). Free memory was 92.4MB in the beginning and 179.5MB in the end (delta: -87.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 23:47:02,982 INFO L158 Benchmark]: Witness Printer took 97.48ms. Allocated memory is still 237.0MB. Free memory was 179.5MB in the beginning and 176.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 23:47:02,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.4s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1097 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2353 IncrementalHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1097 mSolverCounterUnsat, 56 mSDtfsCounter, 2353 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1490 GetRequests, 1255 SyntacticMatches, 41 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20152 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 35/115 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int MAX = __VERIFIER_nondet_uint(); [L17] COND FALSE !(!(MAX > 0)) [L18] char str1[MAX], str2[MAX]; [L19] int cont, i, j; [L20] cont = 0 [L22] i=0 VAL [cont=0, i=0, MAX=2, str1={26295:0}, str2={26294:0}] [L22] COND TRUE i= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- VAL [cont=0, i=0, j=1, MAX=2, str1={26295:0}, str2={26294:0}] [L29] COND TRUE i >= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- VAL [cont=0, i=-1, j=2, MAX=2, str1={26295:0}, str2={26294:0}] [L29] COND FALSE !(i >= 0) [L34] j = MAX-1 [L35] i=0 VAL [cont=0, i=0, j=1, MAX=2, str1={26295:0}, str2={26294:0}] [L35] COND TRUE i