./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --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 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:35:26,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:35:26,831 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 02:35:26,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:35:26,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:35:26,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:35:26,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:35:26,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:35:26,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:35:26,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:35:26,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:35:26,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:35:26,899 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:35:26,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:35:26,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:35:26,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:35:26,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:35:26,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:35:26,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:35:26,904 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:35:26,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:35:26,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:35:26,906 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:35:26,907 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:35:26,907 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:35:26,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:35:26,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:35:26,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:35:26,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:35:26,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:35:26,911 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:35:26,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:35:26,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:35:26,912 INFO L153 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820401b0140b0bfb9dffe62418c7fb9ec2170c8bc6edd71581a88d2ffbcfa1c6 [2023-11-19 02:35:27,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:35:27,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:35:27,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:35:27,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:35:27,306 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:35:27,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/forester-heap/dll-token-2.i [2023-11-19 02:35:31,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:35:31,465 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:35:31,467 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i [2023-11-19 02:35:31,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/data/1f0a30455/4119541c36b743c3ba91e67838bab41a/FLAG74beacc62 [2023-11-19 02:35:31,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/data/1f0a30455/4119541c36b743c3ba91e67838bab41a [2023-11-19 02:35:31,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:35:31,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:35:31,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:35:31,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:35:31,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:35:31,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:31" (1/1) ... [2023-11-19 02:35:31,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551de621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:31, skipping insertion in model container [2023-11-19 02:35:31,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:31" (1/1) ... [2023-11-19 02:35:31,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:35:31,935 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2023-11-19 02:35:31,944 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2023-11-19 02:35:31,946 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2023-11-19 02:35:31,948 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2023-11-19 02:35:31,950 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2023-11-19 02:35:31,953 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2023-11-19 02:35:31,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:35:31,970 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:35:32,016 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22229,22242] [2023-11-19 02:35:32,019 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22398,22411] [2023-11-19 02:35:32,021 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22489,22502] [2023-11-19 02:35:32,023 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22571,22584] [2023-11-19 02:35:32,024 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22649,22662] [2023-11-19 02:35:32,027 WARN L240 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_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/sv-benchmarks/c/forester-heap/dll-token-2.i[22795,22808] [2023-11-19 02:35:32,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:35:32,067 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:35:32,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32 WrapperNode [2023-11-19 02:35:32,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:35:32,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:35:32,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:35:32,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:35:32,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,149 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2023-11-19 02:35:32,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:35:32,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:35:32,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:35:32,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:35:32,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:35:32,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:35:32,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:35:32,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:35:32,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32" (1/1) ... [2023-11-19 02:35:32,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:35:32,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:35:32,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:35:32,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:35:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 02:35:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 02:35:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 02:35:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:35:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 02:35:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 02:35:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:35:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:35:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:35:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:35:32,573 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:35:32,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:35:32,991 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:35:33,020 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:35:33,020 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 02:35:33,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:33 BoogieIcfgContainer [2023-11-19 02:35:33,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:35:33,029 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:35:33,029 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:35:33,043 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:35:33,044 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:33" (1/1) ... [2023-11-19 02:35:33,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:35:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 41 states and 64 transitions. [2023-11-19 02:35:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 64 transitions. [2023-11-19 02:35:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 02:35:33,128 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 41 states and 59 transitions. [2023-11-19 02:35:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-11-19 02:35:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 02:35:33,467 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:33,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 41 states and 59 transitions. [2023-11-19 02:35:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-11-19 02:35:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 02:35:34,088 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 45 states and 66 transitions. [2023-11-19 02:35:34,499 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2023-11-19 02:35:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 02:35:34,500 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:34,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 45 states and 62 transitions. [2023-11-19 02:35:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2023-11-19 02:35:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 02:35:34,631 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 02:35:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 39 states and 53 transitions. [2023-11-19 02:35:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2023-11-19 02:35:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 02:35:35,045 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2023-11-19 02:35:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2023-11-19 02:35:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 02:35:35,379 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:35:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:35:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:35:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 46 states and 61 transitions. [2023-11-19 02:35:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-11-19 02:35:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 02:35:37,806 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:35:37,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:35:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:35:37,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:35:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:35:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:35:38,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:35:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:35:38,283 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2023-11-19 02:35:38,313 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-19 02:35:38,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-19 02:35:38,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated [2023-11-19 02:35:38,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:35:38 ImpRootNode [2023-11-19 02:35:38,321 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:35:38,321 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:35:38,322 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:35:38,322 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:35:38,322 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:33" (3/4) ... [2023-11-19 02:35:38,327 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 02:35:38,333 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-19 02:35:38,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-19 02:35:38,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated [2023-11-19 02:35:38,411 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 02:35:38,413 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:35:38,414 INFO L158 Benchmark]: Toolchain (without parser) took 6886.91ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 138.0MB in the beginning and 114.9MB in the end (delta: 23.1MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,415 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:35:38,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.11ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 119.4MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.04ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 117.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,420 INFO L158 Benchmark]: Boogie Preprocessor took 83.43ms. Allocated memory is still 169.9MB. Free memory was 117.3MB in the beginning and 116.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:35:38,421 INFO L158 Benchmark]: RCFGBuilder took 792.23ms. Allocated memory is still 169.9MB. Free memory was 116.0MB in the beginning and 124.3MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,422 INFO L158 Benchmark]: CodeCheck took 5292.27ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 124.3MB in the beginning and 117.5MB in the end (delta: 6.8MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,423 INFO L158 Benchmark]: Witness Printer took 91.83ms. Allocated memory is still 205.5MB. Free memory was 117.5MB in the beginning and 114.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:35:38,431 INFO L338 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, 41 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 124 mSDtfsCounter, 200 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 2/2 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: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; VAL [head={20612:0}, x={20612:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head VAL [head={20612:0}, x={20612:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={20612:0}, x={20612:0}] [L1030] EXPR x->data VAL [head={20612:0}, x={20612:0}] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={20612:0}, x={20612:0}] [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data VAL [head={20612:0}, x={20613:0}] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={20612:0}, x={20613:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.11ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 119.4MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.04ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 117.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.43ms. Allocated memory is still 169.9MB. Free memory was 117.3MB in the beginning and 116.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 792.23ms. Allocated memory is still 169.9MB. Free memory was 116.0MB in the beginning and 124.3MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 5292.27ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 124.3MB in the beginning and 117.5MB in the end (delta: 6.8MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * Witness Printer took 91.83ms. Allocated memory is still 205.5MB. Free memory was 117.5MB in the beginning and 114.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 02:35:38,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b32cc11-7cca-45b0-8060-f2f0ee1821aa/bin/ukojak-verify-G8NBE6pJGL/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