./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test26-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test26-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff --- 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-5e519f3 [2022-11-02 20:38:08,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:08,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:08,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:08,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:08,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:08,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:08,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:08,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:08,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:08,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:08,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:08,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:08,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:08,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:08,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:08,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:08,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:08,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:08,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:08,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:08,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:08,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:08,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:08,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:08,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:08,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:08,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:08,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:08,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:08,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:08,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:08,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:08,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:08,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:08,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:08,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:08,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:08,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:08,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:08,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:08,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:38:08,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:08,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:08,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:08,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:08,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:08,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:08,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:08,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:08,193 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:08,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:08,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:08,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:08,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:08,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:08,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:08,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:08,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:08,196 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:08,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:08,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:08,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:08,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:08,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:08,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:08,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:08,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:08,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:08,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:08,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:08,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:08,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:08,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:08,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:08,201 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_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5617f713954d7209d6b7210dc855bccb3ec884121999fe1b009aa3de39a1bff [2022-11-02 20:38:08,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:08,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:08,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:08,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:08,526 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:08,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-regression/test26-2.c [2022-11-02 20:38:08,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/data/a78584365/68d0704e9e46426dbccb584557b7d608/FLAG6b4824bed [2022-11-02 20:38:09,125 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:09,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/sv-benchmarks/c/ldv-regression/test26-2.c [2022-11-02 20:38:09,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/data/a78584365/68d0704e9e46426dbccb584557b7d608/FLAG6b4824bed [2022-11-02 20:38:09,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/data/a78584365/68d0704e9e46426dbccb584557b7d608 [2022-11-02 20:38:09,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:09,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:09,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:09,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:09,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:09,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d3afd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09, skipping insertion in model container [2022-11-02 20:38:09,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:09,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:09,761 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_ee921efd-868b-423c-b532-7c6d03935150/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2022-11-02 20:38:09,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:09,775 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:09,791 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_ee921efd-868b-423c-b532-7c6d03935150/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2022-11-02 20:38:09,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:09,810 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:09,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09 WrapperNode [2022-11-02 20:38:09,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:09,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:09,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:09,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:09,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,855 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-11-02 20:38:09,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:09,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:09,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:09,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:09,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:09,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:09,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:09,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:09,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (1/1) ... [2022-11-02 20:38:09,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:09,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:09,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:09,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:38:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:10,072 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:10,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:10,258 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:10,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:10,265 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:38:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:10 BoogieIcfgContainer [2022-11-02 20:38:10,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:10,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:10,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:10,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:10,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:09" (1/3) ... [2022-11-02 20:38:10,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3bebc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:10, skipping insertion in model container [2022-11-02 20:38:10,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:09" (2/3) ... [2022-11-02 20:38:10,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3bebc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:10, skipping insertion in model container [2022-11-02 20:38:10,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:10" (3/3) ... [2022-11-02 20:38:10,285 INFO L112 eAbstractionObserver]: Analyzing ICFG test26-2.c [2022-11-02 20:38:10,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:10,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:38:10,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:10,449 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@247ec3a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:10,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:38:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:38:10,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:10,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:38:10,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:38:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2022-11-02 20:38:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:10,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690020549] [2022-11-02 20:38:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:38:10,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:38:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:38:10,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:38:10,792 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:38:10,796 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:38:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:10,805 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:38:10,811 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:38:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:38:10 BoogieIcfgContainer [2022-11-02 20:38:10,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:38:10,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:38:10,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:38:10,859 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:38:10,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:10" (3/4) ... [2022-11-02 20:38:10,862 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 20:38:10,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:38:10,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:38:10,932 INFO L158 Benchmark]: Toolchain (without parser) took 1438.10ms. Allocated memory is still 125.8MB. Free memory was 89.8MB in the beginning and 74.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,936 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:38:10,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.50ms. Allocated memory is still 125.8MB. Free memory was 89.6MB in the beginning and 102.8MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.12ms. Allocated memory is still 125.8MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,942 INFO L158 Benchmark]: Boogie Preprocessor took 43.40ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,943 INFO L158 Benchmark]: RCFGBuilder took 374.19ms. Allocated memory is still 125.8MB. Free memory was 100.0MB in the beginning and 90.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,943 INFO L158 Benchmark]: TraceAbstraction took 573.36ms. Allocated memory is still 125.8MB. Free memory was 90.3MB in the beginning and 76.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,944 INFO L158 Benchmark]: Witness Printer took 71.95ms. Allocated memory is still 125.8MB. Free memory was 76.0MB in the beginning and 74.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:10,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.50ms. Allocated memory is still 125.8MB. Free memory was 89.6MB in the beginning and 102.8MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.12ms. Allocated memory is still 125.8MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.40ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.19ms. Allocated memory is still 125.8MB. Free memory was 100.0MB in the beginning and 90.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 573.36ms. Allocated memory is still 125.8MB. Free memory was 90.3MB in the beginning and 76.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 71.95ms. Allocated memory is still 125.8MB. Free memory was 76.0MB in the beginning and 74.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [global={4:0}] [L16] struct dummy *pd = &global; [L18] CALL assign(&pd->b, &pd->b) [L11] EXPR \read(*pb) [L11] *pa = *pb [L18] RET assign(&pd->b, &pd->b) [L20] EXPR pd->a [L20] EXPR global.b VAL [global={4:0}, global.b=1, pd={4:0}, pd->a=0] [L20] COND TRUE pd->a != global.b [L26] reach_error() VAL [global={4:0}, pd={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:38:11,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee921efd-868b-423c-b532-7c6d03935150/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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