./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 8393723b 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_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 19:50:55,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:55,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:55,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:55,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:55,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:55,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:55,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:55,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:55,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:55,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:55,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:55,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:55,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:55,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:55,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:55,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:55,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:55,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:55,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:55,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:55,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:55,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:55,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:55,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:55,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:55,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:55,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:55,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:55,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:55,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:55,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:55,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:55,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:55,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:55,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:55,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:55,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:55,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:55,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:55,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:55,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:50:55,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:55,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:55,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:55,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:55,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:55,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:55,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:55,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:55,305 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:55,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:55,307 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:50:55,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:50:55,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:55,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:50:55,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:55,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:50:55,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:55,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:50:55,309 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:50:55,309 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:50:55,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:50:55,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:55,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:50:55,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:55,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:55,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:55,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:55,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:55,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:55,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:50:55,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:50:55,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:50:55,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:50:55,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:50:55,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:50:55,315 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_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2022-11-18 19:50:55,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:55,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:55,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:55,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:55,691 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:55,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-18 19:50:55,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/data/5cad6c489/dff7f7094d9244d38889a5e04da1add7/FLAG63e2463e0 [2022-11-18 19:50:56,463 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:56,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2022-11-18 19:50:56,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/data/5cad6c489/dff7f7094d9244d38889a5e04da1add7/FLAG63e2463e0 [2022-11-18 19:50:56,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/data/5cad6c489/dff7f7094d9244d38889a5e04da1add7 [2022-11-18 19:50:56,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:56,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:56,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:56,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:56,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:56,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:56" (1/1) ... [2022-11-18 19:50:56,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594e3276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:56, skipping insertion in model container [2022-11-18 19:50:56,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:56" (1/1) ... [2022-11-18 19:50:56,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:56,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:57,750 WARN L234 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_d31c462f-393c-49ee-8666-a943a12f0bcc/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-18 19:50:57,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:57,805 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:50:57,893 WARN L234 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_d31c462f-393c-49ee-8666-a943a12f0bcc/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63494,63507] [2022-11-18 19:50:57,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:58,076 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:50:58,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58 WrapperNode [2022-11-18 19:50:58,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:58,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:58,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:50:58,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:50:58,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,326 INFO L138 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3797 [2022-11-18 19:50:58,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:58,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:50:58,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:50:58,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:50:58,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:50:58,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:50:58,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:50:58,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:50:58,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (1/1) ... [2022-11-18 19:50:58,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:58,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:58,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:50:58,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31c462f-393c-49ee-8666-a943a12f0bcc/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:50:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:50:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:50:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:50:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:50:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:50:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:50:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2022-11-18 19:50:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2022-11-18 19:50:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2022-11-18 19:50:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2022-11-18 19:50:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2022-11-18 19:50:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2022-11-18 19:50:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:50:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:50:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:50:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:50:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:50:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:50:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2022-11-18 19:50:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2022-11-18 19:50:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2022-11-18 19:50:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2022-11-18 19:50:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2022-11-18 19:50:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2022-11-18 19:50:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2022-11-18 19:50:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2022-11-18 19:50:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:50:58,704 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:50:59,201 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:50:59,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:02,731 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:05,789 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:05,789 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:51:05,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:05 BoogieIcfgContainer [2022-11-18 19:51:05,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:05,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:05,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:05,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:05,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:50:56" (1/3) ... [2022-11-18 19:51:05,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ac2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:05, skipping insertion in model container [2022-11-18 19:51:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:58" (2/3) ... [2022-11-18 19:51:05,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ac2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:05, skipping insertion in model container [2022-11-18 19:51:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:05" (3/3) ... [2022-11-18 19:51:05,809 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2022-11-18 19:51:05,820 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:51:05,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:05,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2022-11-18 19:51:05,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:51:06,725 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:51:06,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-18 19:51:11,684 INFO L130 PetriNetUnfolder]: 147/2655 cut-off events. [2022-11-18 19:51:11,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:51:11,867 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. [2022-11-18 19:51:11,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 2537 places, 2662 transitions, 5359 flow [2022-11-18 19:51:11,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2530 places, 2655 transitions, 5331 flow [2022-11-18 19:51:11,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:11,983 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;@62a70e20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:11,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 175 error locations. [2022-11-18 19:51:11,993 INFO L130 PetriNetUnfolder]: 0/78 cut-off events. [2022-11-18 19:51:11,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:51:11,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:11,995 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] [2022-11-18 19:51:11,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [instrPop3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, instrPop3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 172 more)] === [2022-11-18 19:51:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -574651525, now seen corresponding path program 1 times [2022-11-18 19:51:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:12,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384148192] [2022-11-18 19:51:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:13,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:13,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384148192] [2022-11-18 19:51:13,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384148192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:13,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:13,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:51:13,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751979151] [2022-11-18 19:51:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:13,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:51:13,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:51:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:51:13,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 2147 out of 2662 [2022-11-18 19:51:13,703 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) [2022-11-18 19:51:13,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:13,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2147 of 2662 [2022-11-18 19:51:13,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand