./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/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_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/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_929b781b-aa50-4386-9903-bdfa1cbcb872/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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- 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 20:05:03,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:05:03,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:05:03,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:05:03,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:05:03,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:05:03,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:05:03,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:05:03,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:05:03,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:05:03,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:05:03,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:05:03,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:05:03,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:05:03,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:05:03,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:05:03,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:05:03,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:05:03,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:05:03,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:05:03,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:05:03,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:05:03,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:05:03,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:05:03,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:05:03,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:05:03,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:05:03,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:05:03,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:05:03,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:05:03,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:05:03,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:05:03,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:05:03,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:05:03,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:05:03,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:05:03,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:05:03,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:05:03,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:05:03,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:05:03,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:05:03,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:05:03,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:05:03,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:05:03,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:05:03,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:05:03,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:05:03,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:05:03,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:05:03,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:05:03,224 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:05:03,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:05:03,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:05:03,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:05:03,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:05:03,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:05:03,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:05:03,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:05:03,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:05:03,228 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:05:03,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:05:03,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:05:03,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:05:03,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:05:03,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:05:03,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:05:03,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:05:03,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:05:03,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:05:03,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:05:03,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:05:03,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:05:03,231 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:05:03,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:05:03,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:05:03,232 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_929b781b-aa50-4386-9903-bdfa1cbcb872/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2022-11-02 20:05:03,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:05:03,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:05:03,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:05:03,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:05:03,666 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:05:03,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2022-11-02 20:05:03,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/data/9f3482fae/2424d789ea324caeaedd3cd46a8a659a/FLAG3943cae7f [2022-11-02 20:05:04,378 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:05:04,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2022-11-02 20:05:04,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/data/9f3482fae/2424d789ea324caeaedd3cd46a8a659a/FLAG3943cae7f [2022-11-02 20:05:04,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/data/9f3482fae/2424d789ea324caeaedd3cd46a8a659a [2022-11-02 20:05:04,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:05:04,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:05:04,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:05:04,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:05:04,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:05:04,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:05:04" (1/1) ... [2022-11-02 20:05:04,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3d8437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:04, skipping insertion in model container [2022-11-02 20:05:04,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:05:04" (1/1) ... [2022-11-02 20:05:04,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:05:04,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:05:05,321 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_929b781b-aa50-4386-9903-bdfa1cbcb872/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2022-11-02 20:05:05,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:05:05,343 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:05:05,405 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_929b781b-aa50-4386-9903-bdfa1cbcb872/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2022-11-02 20:05:05,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:05:05,461 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:05:05,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05 WrapperNode [2022-11-02 20:05:05,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:05:05,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:05:05,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:05:05,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:05:05,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,534 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-02 20:05:05,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:05:05,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:05:05,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:05:05,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:05:05,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:05:05,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:05:05,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:05:05,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:05:05,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (1/1) ... [2022-11-02 20:05:05,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:05:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:05:05,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:05:05,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:05:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:05:05,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:05:05,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:05:05,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:05:05,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:05:05,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:05:05,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:05:05,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:05:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:05:05,689 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:05:05,881 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:05:05,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:05:06,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:05:06,187 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:05:06,187 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:05:06,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:05:06 BoogieIcfgContainer [2022-11-02 20:05:06,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:05:06,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:05:06,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:05:06,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:05:06,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:05:04" (1/3) ... [2022-11-02 20:05:06,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640eded2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:05:06, skipping insertion in model container [2022-11-02 20:05:06,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:05" (2/3) ... [2022-11-02 20:05:06,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640eded2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:05:06, skipping insertion in model container [2022-11-02 20:05:06,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:05:06" (3/3) ... [2022-11-02 20:05:06,209 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2022-11-02 20:05:06,220 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:05:06,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:05:06,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:05:06,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:05:06,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:05:06,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 68 transitions, 141 flow [2022-11-02 20:05:06,443 INFO L130 PetriNetUnfolder]: 10/79 cut-off events. [2022-11-02 20:05:06,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:05:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 10/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2022-11-02 20:05:06,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 68 transitions, 141 flow [2022-11-02 20:05:06,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 68 transitions, 141 flow [2022-11-02 20:05:06,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:05:06,475 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;@51229f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:05:06,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:05:06,491 INFO L130 PetriNetUnfolder]: 2/44 cut-off events. [2022-11-02 20:05:06,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:05:06,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:05:06,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:05:06,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1264854827, now seen corresponding path program 1 times [2022-11-02 20:05:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:06,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512881121] [2022-11-02 20:05:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:05:06,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:05:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:05:06,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:05:06,787 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:05:06,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-02 20:05:06,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-02 20:05:06,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-02 20:05:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:05:06,794 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:05:06,811 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:05:06,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:05:06,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:05:06,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 109 transitions, 230 flow [2022-11-02 20:05:07,040 INFO L130 PetriNetUnfolder]: 19/133 cut-off events. [2022-11-02 20:05:07,041 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:05:07,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 133 events. 19/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-11-02 20:05:07,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 109 transitions, 230 flow [2022-11-02 20:05:07,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 109 transitions, 230 flow [2022-11-02 20:05:07,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:05:07,061 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;@51229f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:05:07,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:05:07,105 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-11-02 20:05:07,105 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:05:07,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:05:07,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:05:07,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:05:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1154116848, now seen corresponding path program 1 times [2022-11-02 20:05:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:07,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371218434] [2022-11-02 20:05:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:05:07,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:05:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:05:07,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:05:07,303 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:05:07,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:05:07,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-02 20:05:07,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:05:07,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-02 20:05:07,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:05:07,305 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:05:07,315 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-11-02 20:05:07,315 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:05:07,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:05:07 BasicIcfg [2022-11-02 20:05:07,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:05:07,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:05:07,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:05:07,376 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:05:07,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:05:06" (3/4) ... [2022-11-02 20:05:07,379 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 20:05:07,465 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b781b-aa50-4386-9903-bdfa1cbcb872/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:05:07,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:05:07,466 INFO L158 Benchmark]: Toolchain (without parser) took 2825.51ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 78.9MB in the beginning and 104.6MB in the end (delta: -25.7MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-11-02 20:05:07,467 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory was 38.6MB in the beginning and 38.5MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:05:07,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 810.45ms. Allocated memory is still 115.3MB. Free memory was 78.7MB in the beginning and 80.5MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:05:07,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.08ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:05:07,469 INFO L158 Benchmark]: Boogie Preprocessor took 44.87ms. Allocated memory is still 115.3MB. Free memory was 78.4MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:05:07,470 INFO L158 Benchmark]: RCFGBuilder took 609.40ms. Allocated memory is still 115.3MB. Free memory was 77.3MB in the beginning and 64.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:05:07,471 INFO L158 Benchmark]: TraceAbstraction took 1180.82ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 64.2MB in the beginning and 109.9MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:05:07,471 INFO L158 Benchmark]: Witness Printer took 90.07ms. Allocated memory is still 155.2MB. Free memory was 109.9MB in the beginning and 104.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:05:07,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory was 38.6MB in the beginning and 38.5MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 810.45ms. Allocated memory is still 115.3MB. Free memory was 78.7MB in the beginning and 80.5MB in the end (delta: -1.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.08ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.87ms. Allocated memory is still 115.3MB. Free memory was 78.4MB in the beginning and 77.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 609.40ms. Allocated memory is still 115.3MB. Free memory was 77.3MB in the beginning and 64.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1180.82ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 64.2MB in the beginning and 109.9MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 90.07ms. Allocated memory is still 155.2MB. Free memory was 109.9MB in the beginning and 104.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 VAL [t={3:0}] [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=4294967296, arg={0:0}, arg={0:0}, x=4294967296] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=4294967301, arg={0:0}, arg={0:0}, x=4294967296, y=4294967301] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=5, arg={0:0}, arg={0:0}, x=4294967296, y=4294967301, z=5] [L687] 1 int i, j=1, k=1; VAL [arg={0:0}, arg={0:0}, j=1, k=1, x=4294967296, y=4294967301, z=5] [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1, x=4294967296, y=4294967301, z=5] [L688] COND FALSE 1 !(i