./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/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_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/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_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/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 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- 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 12:09:29,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:09:29,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:09:29,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:09:29,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:09:29,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:09:29,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:09:29,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:09:29,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:09:29,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:09:29,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:09:29,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:09:29,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:09:29,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:09:29,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:09:29,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:09:29,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:09:29,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:09:29,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:09:29,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:09:29,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:09:29,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:09:29,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:09:29,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:09:29,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:09:29,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:09:29,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:09:29,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:09:29,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:09:29,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:09:29,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:09:29,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:09:29,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:09:29,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:09:29,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:09:29,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:09:29,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:09:29,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:09:29,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:09:29,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:09:29,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:09:29,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:09:29,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:09:29,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:09:29,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:09:29,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:09:29,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:09:29,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:09:29,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:09:29,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:09:29,278 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:09:29,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:09:29,279 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:09:29,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:09:29,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:09:29,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:09:29,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:09:29,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:09:29,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:09:29,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:09:29,281 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:09:29,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:09:29,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:09:29,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:09:29,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:09:29,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:09:29,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:09:29,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:09:29,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:29,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:09:29,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:09:29,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:09:29,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:09:29,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:09:29,284 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:09:29,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:09:29,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:09:29,286 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_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-16 12:09:29,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:09:29,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:09:29,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:09:29,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:09:29,592 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:09:29,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-16 12:09:29,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/data/697080491/51e89dbd69d64777b4bfba4e292b1287/FLAGf40d69de6 [2022-11-16 12:09:30,397 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:09:30,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-16 12:09:30,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/data/697080491/51e89dbd69d64777b4bfba4e292b1287/FLAGf40d69de6 [2022-11-16 12:09:30,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/data/697080491/51e89dbd69d64777b4bfba4e292b1287 [2022-11-16 12:09:30,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:09:30,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:09:30,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:30,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:09:30,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:09:30,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:30" (1/1) ... [2022-11-16 12:09:30,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47cb848f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:30, skipping insertion in model container [2022-11-16 12:09:30,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:30" (1/1) ... [2022-11-16 12:09:30,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:09:30,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:09:31,746 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_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-16 12:09:31,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:31,788 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:09:31,856 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_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-16 12:09:31,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:31,961 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:09:31,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31 WrapperNode [2022-11-16 12:09:31,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:31,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:31,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:09:31,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:09:31,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,191 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3797 [2022-11-16 12:09:32,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:32,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:09:32,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:09:32,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:09:32,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:09:32,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:09:32,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:09:32,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:09:32,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (1/1) ... [2022-11-16 12:09:32,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:32,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:09:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6347d7c-f7cf-4c4d-af20-e6bbbc95d6e6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:09:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:09:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:09:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:09:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:09:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:09:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:09:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-16 12:09:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-16 12:09:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-16 12:09:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-16 12:09:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-16 12:09:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-16 12:09:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:09:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:09:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:09:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:09:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:09:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:09:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-16 12:09:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-16 12:09:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-16 12:09:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-16 12:09:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-16 12:09:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-16 12:09:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-16 12:09:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-16 12:09:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:09:32,504 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 12:09:33,134 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:09:33,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:09:36,962 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:09:39,963 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:09:39,963 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:09:39,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:39 BoogieIcfgContainer [2022-11-16 12:09:39,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:09:39,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:09:39,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:09:39,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:09:39,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:09:30" (1/3) ... [2022-11-16 12:09:39,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375e35e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:39, skipping insertion in model container [2022-11-16 12:09:39,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:31" (2/3) ... [2022-11-16 12:09:39,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375e35e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:39, skipping insertion in model container [2022-11-16 12:09:39,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:39" (3/3) ... [2022-11-16 12:09:39,982 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-16 12:09:39,992 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:09:40,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:09:40,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2022-11-16 12:09:40,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:09:41,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:09:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-16 12:09:46,001 INFO L130 PetriNetUnfolder]: 147/2655 cut-off events. [2022-11-16 12:09:46,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:09:46,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 2655 events. 147/2655 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 18122 event pairs, 0 based on Foata normal form. 0/2424 useless extension candidates. Maximal degree in co-relation 2600. Up to 6 conditions per place. [2022-11-16 12:09:46,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-16 12:09:46,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2530 places, 2655 transitions, 5331 flow [2022-11-16 12:09:46,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:46,328 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;@73c406a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:46,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 175 error locations. [2022-11-16 12:09:46,340 INFO L130 PetriNetUnfolder]: 0/78 cut-off events. [2022-11-16 12:09:46,341 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:09:46,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:46,342 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, 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 12:09:46,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [instrPop3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 172 more)] === [2022-11-16 12:09:46,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash -574651525, now seen corresponding path program 1 times [2022-11-16 12:09:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974433264] [2022-11-16 12:09:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,002 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 12:09:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:48,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974433264] [2022-11-16 12:09:48,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974433264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:48,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:48,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:09:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813851432] [2022-11-16 12:09:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:09:48,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:09:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:09:48,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 2147 out of 2662 [2022-11-16 12:09:48,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2530 places, 2655 transitions, 5331 flow. Second operand has 11 states, 11 states have (on average 2151.0) internal successors, (23661), 11 states have internal predecessors, (23661), 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 12:09:48,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:48,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2147 of 2662 [2022-11-16 12:09:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand