./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 --- 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-38b53e6 [2022-11-25 18:48:35,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:48:35,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:48:35,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:48:35,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:48:35,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:48:35,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:48:35,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:48:35,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:48:35,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:48:35,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:48:35,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:48:35,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:48:35,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:48:35,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:48:35,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:48:35,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:48:35,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:48:35,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:48:35,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:48:35,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:48:35,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:48:35,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:48:35,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:48:35,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:48:35,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:48:35,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:48:35,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:48:35,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:48:35,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:48:35,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:48:35,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:48:35,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:48:35,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:48:35,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:48:35,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:48:35,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:48:35,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:48:35,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:48:35,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:48:35,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:48:35,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-11-25 18:48:35,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:48:35,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:48:35,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:48:35,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:48:35,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:48:35,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:48:35,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:48:35,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:48:35,284 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:48:35,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:48:35,286 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:48:35,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:48:35,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:48:35,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:48:35,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:48:35,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:48:35,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:48:35,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:48:35,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:48:35,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:48:35,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:48:35,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:48:35,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:48:35,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:48:35,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:48:35,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:48:35,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:48:35,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:48:35,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:48:35,304 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-25 18:48:35,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:48:35,305 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-25 18:48:35,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-25 18:48:35,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:48:35,305 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-25 18:48:35,306 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-25 18:48:35,306 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_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 [2022-11-25 18:48:35,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:48:35,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:48:35,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:48:35,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:48:35,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:48:35,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2022-11-25 18:48:38,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:48:38,911 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:48:38,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2022-11-25 18:48:38,948 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/data/464324ac6/2df4f0604ba34af08e368d042e4f2bee/FLAG7f5893812 [2022-11-25 18:48:38,965 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/data/464324ac6/2df4f0604ba34af08e368d042e4f2bee [2022-11-25 18:48:38,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:48:38,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:48:38,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:48:38,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:48:38,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:48:38,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:48:38" (1/1) ... [2022-11-25 18:48:38,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576b4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:38, skipping insertion in model container [2022-11-25 18:48:38,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:48:38" (1/1) ... [2022-11-25 18:48:38,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:48:39,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:48:39,473 WARN L237 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_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-11-25 18:48:39,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:48:39,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:48:39,577 WARN L237 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_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-11-25 18:48:39,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:48:39,623 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:48:39,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39 WrapperNode [2022-11-25 18:48:39,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:48:39,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:48:39,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:48:39,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:48:39,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,672 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-11-25 18:48:39,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:48:39,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:48:39,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:48:39,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:48:39,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:48:39,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:48:39,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:48:39,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:48:39,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (1/1) ... [2022-11-25 18:48:39,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:48:39,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:48:39,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:48:39,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:48:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:48:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 18:48:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 18:48:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:48:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:48:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:48:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:48:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:48:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:48:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:48:39,793 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:48:40,018 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:48:40,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:48:40,467 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:48:40,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:48:40,685 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:48:40,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:48:40 BoogieIcfgContainer [2022-11-25 18:48:40,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:48:40,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:48:40,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:48:40,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:48:40,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:48:38" (1/3) ... [2022-11-25 18:48:40,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdd8ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:48:40, skipping insertion in model container [2022-11-25 18:48:40,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:48:39" (2/3) ... [2022-11-25 18:48:40,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdd8ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:48:40, skipping insertion in model container [2022-11-25 18:48:40,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:48:40" (3/3) ... [2022-11-25 18:48:40,703 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2022-11-25 18:48:40,728 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:48:40,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:48:40,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:48:40,753 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:48:40,887 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:48:40,953 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:48:40,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-25 18:48:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 [2022-11-25 18:48:40,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-25 18:48:40,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-25 18:48:40,995 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-25 18:48:41,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2022-11-25 18:48:41,016 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=PARTIAL_ORDER_FA, 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;@477520ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:48:41,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:48:41,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:48:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:48:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 251955666, now seen corresponding path program 1 times [2022-11-25 18:48:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:48:41,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468554224] [2022-11-25 18:48:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:48:41,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:48:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:48:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:48:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:48:41,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468554224] [2022-11-25 18:48:41,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468554224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:48:41,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:48:41,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:48:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757825013] [2022-11-25 18:48:41,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:48:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:48:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:48:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:48:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:48:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:48:41,939 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:48:41,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2022-11-25 18:48:41,940 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:48:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:48:42,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:48:42,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:48:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:48:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1114665440, now seen corresponding path program 1 times [2022-11-25 18:48:42,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:48:42,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719066433] [2022-11-25 18:48:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:48:42,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:48:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:48:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:48:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:48:42,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719066433] [2022-11-25 18:48:42,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719066433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:48:42,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:48:42,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:48:42,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905856602] [2022-11-25 18:48:42,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:48:42,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:48:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:48:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:48:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:48:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:48:42,457 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-25 18:48:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2022-11-25 18:48:42,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:48:42,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:48:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:48:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:48:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:48:42,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:48:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:48:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash -112981812, now seen corresponding path program 1 times [2022-11-25 18:48:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:48:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005919624] [2022-11-25 18:48:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:48:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:48:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:48:42,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:48:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:48:42,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:48:42,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:48:42,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:48:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:48:42,947 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 18:48:42,948 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2022-11-25 18:48:42,952 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:48:42,952 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:48:43,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:48:43 BasicIcfg [2022-11-25 18:48:43,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:48:43,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:48:43,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:48:43,061 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:48:43,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:48:40" (3/4) ... [2022-11-25 18:48:43,063 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 18:48:43,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/witness.graphml [2022-11-25 18:48:43,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:48:43,226 INFO L158 Benchmark]: Toolchain (without parser) took 4257.54ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 146.7MB in the beginning and 164.6MB in the end (delta: -17.9MB). Peak memory consumption was 121.5MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,227 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:48:43,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 653.54ms. Allocated memory is still 176.2MB. Free memory was 146.4MB in the beginning and 127.5MB in the end (delta: 19.0MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.09ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 124.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,228 INFO L158 Benchmark]: Boogie Preprocessor took 32.06ms. Allocated memory is still 176.2MB. Free memory was 124.6MB in the beginning and 122.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,228 INFO L158 Benchmark]: RCFGBuilder took 982.77ms. Allocated memory is still 176.2MB. Free memory was 122.5MB in the beginning and 140.1MB in the end (delta: -17.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,229 INFO L158 Benchmark]: TraceAbstraction took 2366.99ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 140.1MB in the beginning and 86.8MB in the end (delta: 53.3MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,229 INFO L158 Benchmark]: Witness Printer took 165.17ms. Allocated memory is still 211.8MB. Free memory was 86.8MB in the beginning and 164.6MB in the end (delta: -77.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 18:48:43,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 653.54ms. Allocated memory is still 176.2MB. Free memory was 146.4MB in the beginning and 127.5MB in the end (delta: 19.0MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.09ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 124.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.06ms. Allocated memory is still 176.2MB. Free memory was 124.6MB in the beginning and 122.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 982.77ms. Allocated memory is still 176.2MB. Free memory was 122.5MB in the beginning and 140.1MB in the end (delta: -17.6MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2366.99ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 140.1MB in the beginning and 86.8MB in the end (delta: 53.3MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. * Witness Printer took 165.17ms. Allocated memory is still 211.8MB. Free memory was 86.8MB in the beginning and 164.6MB in the end (delta: -77.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2449, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 375, dependent conditional: 356, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1435, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1435, independent: 1396, independent conditional: 0, independent unconditional: 1396, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 235, independent: 145, independent conditional: 0, independent unconditional: 145, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2093, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1435, unknown conditional: 0, unknown unconditional: 1435] , Statistics on independence cache: Total cache size (in pairs): 1435, Positive cache size: 1416, Positive conditional cache size: 0, Positive unconditional cache size: 1416, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 356 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.3s, Number of persistent set computation: 119, Number of trivial persistent sets: 77, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1663, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2449, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 375, dependent conditional: 356, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 430, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2093, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1435, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1435, independent: 1396, independent conditional: 0, independent unconditional: 1396, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 235, independent: 145, independent conditional: 0, independent unconditional: 145, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2093, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1435, unknown conditional: 0, unknown unconditional: 1435] , Statistics on independence cache: Total cache size (in pairs): 1435, Positive cache size: 1416, Positive conditional cache size: 0, Positive unconditional cache size: 1416, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 356 - CounterExampleResult [Line: 759]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] 0 int memory[(2*960+1)]; [L715] 0 int next_alloc_idx = 1; VAL [next_alloc_idx=1] [L716] 0 int m = 0; VAL [m={3:0}, next_alloc_idx=1] [L717] 0 int top; VAL [m={3:0}, next_alloc_idx=1, top={4:0}] [L769] 0 int m2 = 0; VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, top={4:0}] [L770] 0 int state = 0; VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, state=0, top={4:0}] [L788] 0 pthread_t t; VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, state=0, t={6:0}, top={4:0}] [L789] COND TRUE 0 1 VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, state=0, t={6:0}, top={4:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=0, state=0, t={6:0}, top={4:0}] [L773] CALL 1 __VERIFIER_atomic_acquire(&m2) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L773] RET 1 __VERIFIER_atomic_acquire(&m2) [L776] 1 case 0: VAL [arg={0:0}, arg={0:0}, m={3:0}, m2={5:0}, next_alloc_idx=1, state=0, top={4:0}] [L777] CALL 1 EBStack_init() [L732] 1 top = 0 VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, state=0, top={4:0}] [L777] RET 1 EBStack_init() [L778] 1 state = 1 VAL [arg={0:0}, arg={0:0}, m={3:0}, m2={5:0}, next_alloc_idx=1, state=1, top={4:0}] [L779] 1 case 1: VAL [arg={0:0}, arg={0:0}, m={3:0}, m2={5:0}, next_alloc_idx=1, state=1, top={4:0}] [L780] CALL 1 __VERIFIER_atomic_release(&m2) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L780] RET 1 __VERIFIER_atomic_release(&m2) [L781] CALL 1 push_loop() [L762] 1 int r = -1; VAL [m={3:0}, m2={5:0}, next_alloc_idx=1, r=-1, state=1, top={4:0}] [L763] 1 int arg = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=8, arg=8, m={3:0}, m2={5:0}, next_alloc_idx=1, r=-1, state=1, top={4:0}] [L764] COND TRUE 1 1 VAL [arg=8, m={3:0}, m2={5:0}, next_alloc_idx=1, r=-1, state=1, top={4:0}] [L765] CALL, EXPR 1 push(arg) [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=8, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=-1, next_alloc_idx=1, oldTop=-1, state=1, top={4:0}] [L742] CALL, EXPR 1 index_malloc() [L719] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m={3:0}, m2={5:0}, next_alloc_idx=1, state=1, top={4:0}] [L720] CALL 1 __VERIFIER_atomic_acquire(&m) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L720] RET 1 __VERIFIER_atomic_acquire(&m) [L721] COND FALSE 1 !(next_alloc_idx+2-1 > (2*960+1)) VAL [curr_alloc_idx=-1, m={3:0}, m2={5:0}, next_alloc_idx=1, state=1, top={4:0}] [L725] 1 curr_alloc_idx = next_alloc_idx VAL [curr_alloc_idx=1, m={3:0}, m2={5:0}, next_alloc_idx=1, state=1, top={4:0}] [L726] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m={3:0}, m2={5:0}, next_alloc_idx=3, state=1, top={4:0}] [L727] CALL 1 __VERIFIER_atomic_release(&m) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L727] RET 1 __VERIFIER_atomic_release(&m) [L729] 1 return curr_alloc_idx; VAL [\result=1, curr_alloc_idx=1, m={3:0}, m2={5:0}, next_alloc_idx=3, state=1, top={4:0}] [L742] RET, EXPR 1 index_malloc() [L742] 1 newTop = index_malloc() VAL [\old(d)=8, casret={7:0}, d=8, index_malloc()=1, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L743] COND FALSE 1 !(newTop == 0) VAL [\old(d)=8, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L746] 1 memory[newTop+0] = d VAL [\old(d)=8, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L789] COND TRUE 0 1 VAL [m={3:0}, m2={5:0}, next_alloc_idx=3, state=1, t={6:0}, top={4:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={3:0}, m2={5:0}, next_alloc_idx=3, pthread_create(&t, 0, thr1, 0)=1, state=1, t={6:0}, top={4:0}] [L747] COND TRUE 1 1 VAL [\old(d)=8, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L748] EXPR 1 \read(top) VAL [\old(d)=8, \read(top)=0, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L748] 1 oldTop = top VAL [\old(d)=8, \read(top)=0, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L749] 1 memory[newTop+1] = oldTop VAL [\old(d)=8, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L750] CALL 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L705] EXPR 1 \read(*v) [L705] COND TRUE 1 *v == e [L707] 1 *v = u [L707] 1 *r = 1 [L750] RET 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L751] EXPR 1 \read(casret) VAL [\old(d)=8, \read(casret)=1, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L751] COND TRUE 1 casret==1 VAL [\old(d)=8, \read(casret)=1, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L752] 1 return 1; VAL [\old(d)=8, \result=1, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=8, \result=1, casret={7:0}, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L752] 1 return 1; VAL [\old(d)=8, \result=1, d=8, m={3:0}, m2={5:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L765] RET, EXPR 1 push(arg) [L765] 1 r = push(arg) VAL [arg=8, m={3:0}, m2={5:0}, next_alloc_idx=3, push(arg)=1, r=1, state=1, top={4:0}] [L766] CALL 1 __VERIFIER_atomic_assert(r) [L759] EXPR 1 !r || !isEmpty() [L759] CALL, EXPR 1 isEmpty() [L735] EXPR 1 \read(top) [L735] COND FALSE 1 !(top == 0) [L738] 1 return 0; [L759] RET, EXPR 1 isEmpty() [L759] EXPR 1 !r || !isEmpty() [L759] COND TRUE 1 !(!(!r || !isEmpty())) [L759] 1 reach_error() VAL [\old(r)=1, m={3:0}, m2={5:0}, next_alloc_idx=3, r=1, state=1, top={4:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 191 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-11-25 18:48:43,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-11-25 18:48:43,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab4ec43-f3fb-4c4d-8648-4d4e45f3215b/bin/ugemcutter-syNpU3ikLH/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