./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d --- 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-b5237d8 [2022-11-21 13:57:38,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:57:38,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:57:38,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:57:38,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:57:38,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:57:38,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:57:38,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:57:38,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:57:38,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:57:38,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:57:38,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:57:38,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:57:38,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:57:38,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:57:38,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:57:38,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:57:38,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:57:38,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:57:38,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:57:38,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:57:38,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:57:38,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:57:38,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:57:38,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:57:38,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:57:38,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:57:38,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:57:38,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:57:38,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:57:38,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:57:38,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:57:38,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:57:38,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:57:38,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:57:38,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:57:38,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:57:38,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:57:38,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:57:38,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:57:38,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:57:38,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:57:38,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:57:38,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:57:38,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:57:38,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:57:38,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:57:38,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:57:38,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:57:38,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:57:38,561 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:57:38,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:57:38,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:57:38,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:57:38,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:57:38,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:57:38,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:57:38,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:57:38,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:57:38,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:57:38,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:57:38,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:57:38,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:57:38,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:57:38,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:57:38,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:57:38,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:57:38,567 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:57:38,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:57:38,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:57:38,567 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_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d [2022-11-21 13:57:38,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:57:38,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:57:38,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:57:38,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:57:38,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:57:38,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2022-11-21 13:57:42,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:57:42,521 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:57:42,522 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2022-11-21 13:57:42,536 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/data/7e00284f4/696212c7af434a95ad351f73734d6502/FLAG11c9effbd [2022-11-21 13:57:42,554 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/data/7e00284f4/696212c7af434a95ad351f73734d6502 [2022-11-21 13:57:42,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:57:42,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:57:42,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:57:42,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:57:42,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:57:42,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:42" (1/1) ... [2022-11-21 13:57:42,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28eb0d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:42, skipping insertion in model container [2022-11-21 13:57:42,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:42" (1/1) ... [2022-11-21 13:57:42,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:57:42,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:57:43,075 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_64e18ca0-a571-494d-8c67-97b7f8a4a684/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2022-11-21 13:57:43,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:57:43,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:57:43,194 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_64e18ca0-a571-494d-8c67-97b7f8a4a684/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2022-11-21 13:57:43,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:57:43,258 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:57:43,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43 WrapperNode [2022-11-21 13:57:43,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:57:43,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:57:43,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:57:43,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:57:43,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,335 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-11-21 13:57:43,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:57:43,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:57:43,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:57:43,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:57:43,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:57:43,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:57:43,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:57:43,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:57:43,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (1/1) ... [2022-11-21 13:57:43,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:57:43,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:57:43,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:57:43,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e18ca0-a571-494d-8c67-97b7f8a4a684/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:57:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:57:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-21 13:57:43,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-21 13:57:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:57:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:57:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:57:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:57:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:57:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:57:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:57:43,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:57:43,751 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:57:43,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:57:44,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:57:44,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:57:44,454 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 13:57:44,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:44 BoogieIcfgContainer [2022-11-21 13:57:44,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:57:44,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:57:44,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:57:44,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:57:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:57:42" (1/3) ... [2022-11-21 13:57:44,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92f16d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:44, skipping insertion in model container [2022-11-21 13:57:44,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:43" (2/3) ... [2022-11-21 13:57:44,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92f16d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:44, skipping insertion in model container [2022-11-21 13:57:44,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:44" (3/3) ... [2022-11-21 13:57:44,466 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2022-11-21 13:57:44,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:57:44,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:57:44,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:57:44,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:57:44,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 124 transitions, 253 flow [2022-11-21 13:57:44,741 INFO L130 PetriNetUnfolder]: 11/135 cut-off events. [2022-11-21 13:57:44,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:57:44,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 11/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-11-21 13:57:44,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 124 transitions, 253 flow [2022-11-21 13:57:44,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 124 transitions, 253 flow [2022-11-21 13:57:44,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:44,796 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:44,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 13:57:44,815 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-21 13:57:44,815 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:57:44,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:44,816 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2022-11-21 13:57:44,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 467826557, now seen corresponding path program 1 times [2022-11-21 13:57:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:44,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284044261] [2022-11-21 13:57:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:45,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:45,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:45,148 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:45,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-21 13:57:45,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-21 13:57:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-21 13:57:45,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:57:45,155 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:45,167 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:45,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 13:57:45,301 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 430 flow [2022-11-21 13:57:45,431 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2022-11-21 13:57:45,431 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:57:45,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 465 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-11-21 13:57:45,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 209 transitions, 430 flow [2022-11-21 13:57:45,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 430 flow [2022-11-21 13:57:45,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:45,489 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:45,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 13:57:45,512 INFO L130 PetriNetUnfolder]: 7/103 cut-off events. [2022-11-21 13:57:45,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:57:45,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:45,513 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2022-11-21 13:57:45,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-21 13:57:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1595016611, now seen corresponding path program 1 times [2022-11-21 13:57:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:45,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904942129] [2022-11-21 13:57:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:45,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:45,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:45,639 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:45,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-21 13:57:45,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-21 13:57:45,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-21 13:57:45,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-21 13:57:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:57:45,642 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:45,642 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:45,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 13:57:45,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:45,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 294 transitions, 609 flow [2022-11-21 13:57:45,927 INFO L130 PetriNetUnfolder]: 31/331 cut-off events. [2022-11-21 13:57:45,927 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 13:57:45,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 331 events. 31/331 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 913 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-21 13:57:45,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 294 transitions, 609 flow [2022-11-21 13:57:45,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 294 transitions, 609 flow [2022-11-21 13:57:45,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:45,955 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:45,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-21 13:57:45,988 INFO L130 PetriNetUnfolder]: 11/150 cut-off events. [2022-11-21 13:57:45,989 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 13:57:45,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:45,989 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2022-11-21 13:57:45,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-21 13:57:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 490396723, now seen corresponding path program 1 times [2022-11-21 13:57:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272882805] [2022-11-21 13:57:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:46,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:46,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:46,137 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:46,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-21 13:57:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-21 13:57:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-21 13:57:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-21 13:57:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-21 13:57:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:57:46,141 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:46,143 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:46,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 13:57:46,295 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:46,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 379 transitions, 790 flow [2022-11-21 13:57:46,420 INFO L130 PetriNetUnfolder]: 41/429 cut-off events. [2022-11-21 13:57:46,420 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-21 13:57:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 429 events. 41/429 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1422 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-11-21 13:57:46,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 379 transitions, 790 flow [2022-11-21 13:57:46,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 379 transitions, 790 flow [2022-11-21 13:57:46,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:46,439 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:46,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 13:57:46,472 INFO L130 PetriNetUnfolder]: 15/204 cut-off events. [2022-11-21 13:57:46,472 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-21 13:57:46,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:46,473 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 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] [2022-11-21 13:57:46,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-21 13:57:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1122311798, now seen corresponding path program 1 times [2022-11-21 13:57:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:46,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856582943] [2022-11-21 13:57:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:46,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:46,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:46,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:46,591 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:46,591 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-21 13:57:46,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-21 13:57:46,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-21 13:57:46,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-21 13:57:46,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-21 13:57:46,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-21 13:57:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:57:46,593 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:46,594 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:46,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-21 13:57:46,768 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:46,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 464 transitions, 973 flow [2022-11-21 13:57:47,005 INFO L130 PetriNetUnfolder]: 51/527 cut-off events. [2022-11-21 13:57:47,006 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 13:57:47,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 527 events. 51/527 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1934 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 442. Up to 12 conditions per place. [2022-11-21 13:57:47,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 464 transitions, 973 flow [2022-11-21 13:57:47,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 464 transitions, 973 flow [2022-11-21 13:57:47,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:47,027 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:47,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 13:57:47,073 INFO L130 PetriNetUnfolder]: 20/269 cut-off events. [2022-11-21 13:57:47,073 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 13:57:47,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:47,074 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 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] [2022-11-21 13:57:47,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:57:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:47,075 INFO L85 PathProgramCache]: Analyzing trace with hash -120235011, now seen corresponding path program 1 times [2022-11-21 13:57:47,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:47,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343423898] [2022-11-21 13:57:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:47,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:47,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:47,147 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:47,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-21 13:57:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-21 13:57:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-21 13:57:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-21 13:57:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-21 13:57:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-21 13:57:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-21 13:57:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:57:47,149 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:47,150 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:47,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-21 13:57:47,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 549 transitions, 1158 flow [2022-11-21 13:57:47,571 INFO L130 PetriNetUnfolder]: 61/625 cut-off events. [2022-11-21 13:57:47,572 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-21 13:57:47,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 625 events. 61/625 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2505 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 546. Up to 14 conditions per place. [2022-11-21 13:57:47,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 549 transitions, 1158 flow [2022-11-21 13:57:47,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 549 transitions, 1158 flow [2022-11-21 13:57:47,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:47,609 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:47,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-21 13:57:47,694 INFO L130 PetriNetUnfolder]: 27/350 cut-off events. [2022-11-21 13:57:47,694 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-21 13:57:47,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:47,695 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 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] [2022-11-21 13:57:47,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-21 13:57:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2021763279, now seen corresponding path program 1 times [2022-11-21 13:57:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:47,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131313058] [2022-11-21 13:57:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:47,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:57:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:57:47,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:57:47,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:57:47,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-21 13:57:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-21 13:57:47,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-21 13:57:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-21 13:57:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-21 13:57:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-21 13:57:47,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-11-21 13:57:47,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-11-21 13:57:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:57:47,803 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 13:57:47,804 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:57:47,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-21 13:57:47,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:57:47,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 634 transitions, 1345 flow [2022-11-21 13:57:48,317 INFO L130 PetriNetUnfolder]: 71/723 cut-off events. [2022-11-21 13:57:48,317 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-21 13:57:48,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 723 events. 71/723 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3071 event pairs, 0 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 651. Up to 16 conditions per place. [2022-11-21 13:57:48,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 585 places, 634 transitions, 1345 flow [2022-11-21 13:57:48,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 634 transitions, 1345 flow [2022-11-21 13:57:48,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:57:48,359 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;@192cb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:57:48,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-21 13:57:48,510 INFO L130 PetriNetUnfolder]: 32/405 cut-off events. [2022-11-21 13:57:48,511 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-21 13:57:48,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:57:48,511 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, 1, 1, 1, 1] [2022-11-21 13:57:48,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-21 13:57:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1137585072, now seen corresponding path program 1 times [2022-11-21 13:57:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:48,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541024662] [2022-11-21 13:57:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541024662] [2022-11-21 13:57:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541024662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:48,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:48,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:57:48,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528137306] [2022-11-21 13:57:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:48,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:57:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:57:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:57:48,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 634 [2022-11-21 13:57:48,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 634 transitions, 1345 flow. Second operand has 3 states, 3 states have (on average 514.6666666666666) internal successors, (1544), 3 states have internal predecessors, (1544), 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) [2022-11-21 13:57:48,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:57:48,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 634 [2022-11-21 13:57:48,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand