./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i --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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/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 e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c --- 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 16:51:50,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:51:50,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:51:50,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:51:50,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:51:50,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:51:50,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:51:50,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:51:50,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:51:50,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:51:50,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:51:50,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:51:50,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:51:50,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:51:50,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:51:50,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:51:50,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:51:50,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:51:50,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:51:50,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:51:50,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:51:50,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:51:50,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:51:50,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:51:50,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:51:50,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:51:50,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:51:50,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:51:50,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:51:50,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:51:50,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:51:50,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:51:50,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:51:50,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:51:50,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:51:50,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:51:50,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:51:50,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:51:50,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:51:50,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:51:50,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:51:50,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:51:50,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:51:50,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:51:50,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:51:50,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:51:50,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:51:50,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:51:50,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:51:50,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:51:50,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:51:50,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:51:50,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:51:50,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:51:50,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:51:50,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:51:50,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:51:50,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:51:50,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:51:50,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:51:50,945 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:51:50,946 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:51:50,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:51:50,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:50,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:51:50,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:51:50,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:51:50,947 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:51:50,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:51:50,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:51:50,948 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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47f94c757882803b8e19e21a897c3f5ab1653c3391e3b246153a1c416bdab7c [2022-10-17 16:51:51,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:51:51,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:51:51,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:51:51,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:51:51,324 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:51:51,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2022-10-17 16:51:51,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/data/3c2e92e51/f061b424f7a84db880954cd8da84dcb7/FLAG66fba5406 [2022-10-17 16:51:52,021 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:51:52,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/sv-benchmarks/c/heap-manipulation/merge_sort-2.i [2022-10-17 16:51:52,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/data/3c2e92e51/f061b424f7a84db880954cd8da84dcb7/FLAG66fba5406 [2022-10-17 16:51:52,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/data/3c2e92e51/f061b424f7a84db880954cd8da84dcb7 [2022-10-17 16:51:52,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:51:52,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:51:52,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:52,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:51:52,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:51:52,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:52,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b02de66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52, skipping insertion in model container [2022-10-17 16:51:52,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:52,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:51:52,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:51:52,798 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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2022-10-17 16:51:52,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:52,876 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:51:52,923 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_63ac5cc4-d11e-4da0-ada0-278c63d400e4/sv-benchmarks/c/heap-manipulation/merge_sort-2.i[22632,22645] [2022-10-17 16:51:52,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:52,972 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:51:52,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52 WrapperNode [2022-10-17 16:51:52,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:52,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:52,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:51:52,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:51:52,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,072 INFO L138 Inliner]: procedures = 125, calls = 83, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 285 [2022-10-17 16:51:53,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:53,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:51:53,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:51:53,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:51:53,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:51:53,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:51:53,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:51:53,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:51:53,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:52" (1/1) ... [2022-10-17 16:51:53,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:51:53,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:51:53,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ac5cc4-d11e-4da0-ada0-278c63d400e4/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:51:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:51:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2022-10-17 16:51:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2022-10-17 16:51:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-10-17 16:51:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-10-17 16:51:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:51:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:51:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:51:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 16:51:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:51:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:51:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:51:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:51:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:51:53,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:51:53,459 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:51:53,461 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:51:53,958 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:51:54,095 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:51:54,097 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-10-17 16:51:54,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:51:54 BoogieIcfgContainer [2022-10-17 16:51:54,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:51:54,103 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:51:54,103 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:51:54,115 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:51:54,115 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:51:54" (1/1) ... [2022-10-17 16:51:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:51:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 80 states and 146 transitions. [2022-10-17 16:51:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 146 transitions. [2022-10-17 16:51:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 16:51:54,199 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:54,369 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 16:51:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 79 states and 129 transitions. [2022-10-17 16:51:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 129 transitions. [2022-10-17 16:51:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:51:54,407 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:54,522 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 16:51:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 82 states and 132 transitions. [2022-10-17 16:51:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 132 transitions. [2022-10-17 16:51:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:51:54,584 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:51:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 81 states and 130 transitions. [2022-10-17 16:51:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-10-17 16:51:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 16:51:54,977 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:51:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 81 states and 127 transitions. [2022-10-17 16:51:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2022-10-17 16:51:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 16:51:55,064 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:51:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 84 states and 130 transitions. [2022-10-17 16:51:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2022-10-17 16:51:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 16:51:55,259 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:51:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 85 states and 131 transitions. [2022-10-17 16:51:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2022-10-17 16:51:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 16:51:55,415 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:51:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 88 states and 132 transitions. [2022-10-17 16:51:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2022-10-17 16:51:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 16:51:55,980 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:55,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:51:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 91 states and 133 transitions. [2022-10-17 16:51:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2022-10-17 16:51:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 16:51:56,194 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:51:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 100 states and 143 transitions. [2022-10-17 16:51:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2022-10-17 16:51:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 16:51:57,629 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:51:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:51:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 107 states and 149 transitions. [2022-10-17 16:51:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 149 transitions. [2022-10-17 16:51:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 16:51:58,512 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:51:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:51:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:51:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 119 states and 162 transitions. [2022-10-17 16:52:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2022-10-17 16:52:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 16:52:01,665 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 129 states and 171 transitions. [2022-10-17 16:52:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-10-17 16:52:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 16:52:03,555 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:03,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:52:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 137 states and 180 transitions. [2022-10-17 16:52:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2022-10-17 16:52:05,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 16:52:05,813 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:52:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 138 states and 180 transitions. [2022-10-17 16:52:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2022-10-17 16:52:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 16:52:05,980 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:52:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 138 states and 177 transitions. [2022-10-17 16:52:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2022-10-17 16:52:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 16:52:06,028 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:06,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 156 states and 201 transitions. [2022-10-17 16:52:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 201 transitions. [2022-10-17 16:52:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 16:52:10,061 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 16:52:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 152 states and 196 transitions. [2022-10-17 16:52:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 196 transitions. [2022-10-17 16:52:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 16:52:10,932 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 16:52:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 148 states and 191 transitions. [2022-10-17 16:52:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2022-10-17 16:52:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 16:52:11,051 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 174 states and 222 transitions. [2022-10-17 16:52:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2022-10-17 16:52:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 16:52:17,821 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:17,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:18,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 175 states and 224 transitions. [2022-10-17 16:52:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 224 transitions. [2022-10-17 16:52:18,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 16:52:18,199 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.