./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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-e04fb08 [2022-11-16 12:53:08,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:53:08,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:53:09,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:53:09,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:53:09,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:53:09,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:53:09,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:53:09,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:53:09,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:53:09,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:53:09,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:53:09,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:53:09,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:53:09,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:53:09,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:53:09,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:53:09,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:53:09,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:53:09,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:53:09,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:53:09,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:53:09,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:53:09,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:53:09,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:53:09,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:53:09,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:53:09,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:53:09,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:53:09,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:53:09,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:53:09,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:53:09,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:53:09,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:53:09,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:53:09,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:53:09,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:53:09,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:53:09,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:53:09,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:53:09,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:53:09,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:53:09,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:53:09,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:53:09,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:53:09,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:53:09,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:53:09,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:53:09,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:53:09,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:53:09,133 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:53:09,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:53:09,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:53:09,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:53:09,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:53:09,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:53:09,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:53:09,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:53:09,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:53:09,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:53:09,136 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:53:09,136 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:53:09,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:53:09,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:53:09,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:53:09,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:53:09,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:53:09,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:53:09,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:53:09,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:53:09,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:53:09,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:53:09,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:53:09,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:53:09,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:53:09,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:53:09,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:53:09,142 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_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-11-16 12:53:09,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:53:09,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:53:09,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:53:09,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:53:09,480 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:53:09,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-16 12:53:09,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/data/fc53c9080/6b221397cb574ecb9802540f83db3e92/FLAGc7e774d6e [2022-11-16 12:53:10,061 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:53:10,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-16 12:53:10,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/data/fc53c9080/6b221397cb574ecb9802540f83db3e92/FLAGc7e774d6e [2022-11-16 12:53:10,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/data/fc53c9080/6b221397cb574ecb9802540f83db3e92 [2022-11-16 12:53:10,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:53:10,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:53:10,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:53:10,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:53:10,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:53:10,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:53:10" (1/1) ... [2022-11-16 12:53:10,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784b6cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:10, skipping insertion in model container [2022-11-16 12:53:10,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:53:10" (1/1) ... [2022-11-16 12:53:10,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:53:10,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:53:10,913 WARN L229 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_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-16 12:53:10,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:53:10,940 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:53:10,973 WARN L229 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_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-16 12:53:10,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:53:11,026 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:53:11,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11 WrapperNode [2022-11-16 12:53:11,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:53:11,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:53:11,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:53:11,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:53:11,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,101 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-16 12:53:11,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:53:11,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:53:11,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:53:11,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:53:11,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:53:11,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:53:11,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:53:11,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:53:11,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (1/1) ... [2022-11-16 12:53:11,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:53:11,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:11,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:53:11,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:53:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:53:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:53:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:53:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:53:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:53:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:53:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:53:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:53:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:53:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:53:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:53:11,258 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:53:11,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:53:11,397 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:53:11,686 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:53:11,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:53:11,694 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-16 12:53:11,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:53:11 BoogieIcfgContainer [2022-11-16 12:53:11,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:53:11,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:53:11,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:53:11,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:53:11,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:53:10" (1/3) ... [2022-11-16 12:53:11,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71db79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:53:11, skipping insertion in model container [2022-11-16 12:53:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:53:11" (2/3) ... [2022-11-16 12:53:11,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71db79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:53:11, skipping insertion in model container [2022-11-16 12:53:11,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:53:11" (3/3) ... [2022-11-16 12:53:11,707 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-11-16 12:53:11,716 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:53:11,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:53:11,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:53:11,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:53:11,786 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:53:11,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 239 flow [2022-11-16 12:53:11,896 INFO L130 PetriNetUnfolder]: 14/150 cut-off events. [2022-11-16 12:53:11,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:53:11,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 14/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 357 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-11-16 12:53:11,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 117 transitions, 239 flow [2022-11-16 12:53:11,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 117 transitions, 239 flow [2022-11-16 12:53:11,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:53:11,932 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;@680a3baf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:53:11,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 12:53:11,965 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-11-16 12:53:11,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:53:11,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:11,967 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:11,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 12:53:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1459644197, now seen corresponding path program 1 times [2022-11-16 12:53:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:11,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184148630] [2022-11-16 12:53:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:12,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184148630] [2022-11-16 12:53:12,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184148630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:12,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:12,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:53:12,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233180744] [2022-11-16 12:53:12,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:12,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:12,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 117 [2022-11-16 12:53:12,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2022-11-16 12:53:12,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:12,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 117 [2022-11-16 12:53:12,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:12,722 INFO L130 PetriNetUnfolder]: 0/108 cut-off events. [2022-11-16 12:53:12,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:53:12,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 0/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 36/138 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-16 12:53:12,731 INFO L137 encePairwiseOnDemand]: 100/117 looper letters, 9 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2022-11-16 12:53:12,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 243 flow [2022-11-16 12:53:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:53:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:53:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2022-11-16 12:53:12,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2022-11-16 12:53:12,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2022-11-16 12:53:12,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2022-11-16 12:53:12,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:12,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2022-11-16 12:53:12,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-11-16 12:53:12,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-11-16 12:53:12,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-11-16 12:53:12,769 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 239 flow. Second operand 5 states and 510 transitions. [2022-11-16 12:53:12,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 243 flow [2022-11-16 12:53:12,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:53:12,778 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 225 flow [2022-11-16 12:53:12,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2022-11-16 12:53:12,784 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-11-16 12:53:12,784 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 225 flow [2022-11-16 12:53:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2022-11-16 12:53:12,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:12,785 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:12,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:53:12,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 12:53:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1903282342, now seen corresponding path program 1 times [2022-11-16 12:53:12,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:12,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761557453] [2022-11-16 12:53:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:12,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:12,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:53:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:12,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:53:12,859 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:53:12,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2022-11-16 12:53:12,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-16 12:53:12,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-16 12:53:12,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 11 remaining) [2022-11-16 12:53:12,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-16 12:53:12,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-16 12:53:12,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-16 12:53:12,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-16 12:53:12,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-16 12:53:12,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-16 12:53:12,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-16 12:53:12,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:53:12,867 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:53:12,873 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:53:12,873 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:53:12,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:53:12 BasicIcfg [2022-11-16 12:53:12,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:53:12,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:53:12,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:53:12,912 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:53:12,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:53:11" (3/4) ... [2022-11-16 12:53:12,914 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:53:12,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:53:12,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:53:12,985 INFO L158 Benchmark]: Toolchain (without parser) took 2462.33ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 75.9MB in the beginning and 77.5MB in the end (delta: -1.6MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,988 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:53:12,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.69ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 81.6MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.04ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,989 INFO L158 Benchmark]: Boogie Preprocessor took 64.32ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,989 INFO L158 Benchmark]: RCFGBuilder took 529.11ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 63.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,989 INFO L158 Benchmark]: TraceAbstraction took 1211.60ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 62.3MB in the beginning and 82.8MB in the end (delta: -20.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,990 INFO L158 Benchmark]: Witness Printer took 73.21ms. Allocated memory is still 146.8MB. Free memory was 82.8MB in the beginning and 77.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:53:12,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.69ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 81.6MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.04ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.32ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.11ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 63.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1211.60ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 62.3MB in the beginning and 82.8MB in the end (delta: -20.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 73.21ms. Allocated memory is still 146.8MB. Free memory was 82.8MB in the beginning and 77.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 702]: integer overflow possible integer overflow possible We found a FailurePath: [L698] 0 int *p = &data, *q; VAL [data={2147483648:2147483649}, p={2147483648:2147483649}, q={0:0}] [L697] 0 int data = 0; VAL [data={3:0}, p={2147483648:2147483649}, q={0:0}] [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [__global_lock={4:0}, data={3:0}, p={2147483648:2147483649}, q={0:0}] [L699] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [__global_lock={4:0}, data={3:0}, mutex={5:0}, p={2147483648:2147483649}, q={0:0}] [L707] 0 pthread_t t_ids[10000]; VAL [__global_lock={4:0}, data={3:0}, mutex={5:0}, p={2147483648:2147483649}, q={0:0}, t_ids={6:0}] [L707] 0 int i=0; VAL [__global_lock={4:0}, data={3:0}, i=0, mutex={5:0}, p={2147483648:2147483649}, q={0:0}, t_ids={6:0}] [L707] COND TRUE 0 i<10000 VAL [__global_lock={4:0}, data={3:0}, i=0, mutex={5:0}, p={2147483648:2147483649}, q={0:0}, t_ids={6:0}] [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={4:0}, arg={0:0}, data={3:0}, i=0, mutex={5:0}, p={2147483648:2147483649}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, q={0:0}, t_ids={6:0}] [L702] EXPR 1 \read(*p) VAL [\read(*p)=2147483647, __global_lock={4:0}, arg={0:0}, arg={0:0}, data={3:0}, mutex={5:0}, p={2147483648:2147483649}, q={0:0}] [L702] 1 (*p)++ VAL [(*p)++=2147483647, \read(*p)=2147483647, __global_lock={4:0}, arg={0:0}, arg={0:0}, data={3:0}, mutex={5:0}, p={2147483648:2147483649}, q={0:0}] - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 143 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 4 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.3s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-11-16 12:53:13,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f6cedc3-f2b7-4672-b5ff-cebce99e9b6a/bin/uautomizer-tPACEb0tL8/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(OVERFLOW)