./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:07:17,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:07:17,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:07:17,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:07:17,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:07:17,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:07:17,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:07:17,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:07:17,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:07:17,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:07:17,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:07:17,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:07:17,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:07:17,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:07:17,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:07:17,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:07:17,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:07:17,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:07:17,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:07:17,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:07:17,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:07:17,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:07:17,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:07:17,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:07:17,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:07:17,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:07:17,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:07:17,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:07:17,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:07:17,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:07:17,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:07:17,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:07:17,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:07:17,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:07:17,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:07:17,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:07:17,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:07:17,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:07:17,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:07:17,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:07:17,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:07:17,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:07:17,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:07:17,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:07:17,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:07:17,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:07:17,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:07:17,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:07:17,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:07:17,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:07:17,483 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:07:17,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:07:17,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:07:17,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:07:17,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:07:17,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:07:17,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:07:17,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:07:17,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:07:17,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:07:17,486 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:07:17,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:07:17,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:07:17,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:07:17,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:07:17,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:07:17,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:07:17,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:07:17,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:07:17,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:07:17,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:07:17,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:07:17,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:07:17,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:07:17,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:07:17,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:07:17,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:07:17,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:07:17,491 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-25 18:07:17,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:07:17,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:07:17,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:07:17,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:07:17,875 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:07:17,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-25 18:07:21,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:07:21,385 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:07:21,386 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-25 18:07:21,395 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/data/011c29d5b/b769ab4125984273aaf5e54b11d3e2ea/FLAG8e91d0acc [2022-11-25 18:07:21,427 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/data/011c29d5b/b769ab4125984273aaf5e54b11d3e2ea [2022-11-25 18:07:21,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:07:21,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:07:21,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:07:21,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:07:21,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:07:21,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64909d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21, skipping insertion in model container [2022-11-25 18:07:21,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:07:21,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:07:21,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,688 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_436f06bb-383f-42dd-a3ca-7c0b3be317e9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-25 18:07:21,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:07:21,706 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:07:21,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,727 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,729 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:07:21,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:07:21,746 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_436f06bb-383f-42dd-a3ca-7c0b3be317e9/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-25 18:07:21,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:07:21,767 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:07:21,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21 WrapperNode [2022-11-25 18:07:21,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:07:21,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:07:21,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:07:21,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:07:21,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,825 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-11-25 18:07:21,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:07:21,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:07:21,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:07:21,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:07:21,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:07:21,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:07:21,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:07:21,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:07:21,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (1/1) ... [2022-11-25 18:07:21,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:07:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:07:21,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:07:21,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:07:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:07:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:07:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:07:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:07:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:07:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:07:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:07:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:07:21,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 18:07:21,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 18:07:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:07:21,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:07:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:07:21,964 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:07:22,151 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:07:22,153 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:07:22,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:07:23,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:07:23,524 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-25 18:07:23,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:23 BoogieIcfgContainer [2022-11-25 18:07:23,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:07:23,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:07:23,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:07:23,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:07:23,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:07:21" (1/3) ... [2022-11-25 18:07:23,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e478f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:23, skipping insertion in model container [2022-11-25 18:07:23,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:21" (2/3) ... [2022-11-25 18:07:23,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e478f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:23, skipping insertion in model container [2022-11-25 18:07:23,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:23" (3/3) ... [2022-11-25 18:07:23,543 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-11-25 18:07:23,552 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:07:23,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:07:23,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 18:07:23,564 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:07:23,779 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 18:07:23,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 304 transitions, 640 flow [2022-11-25 18:07:24,091 INFO L130 PetriNetUnfolder]: 22/300 cut-off events. [2022-11-25 18:07:24,092 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:07:24,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 300 events. 22/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-11-25 18:07:24,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 304 transitions, 640 flow [2022-11-25 18:07:24,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 277 transitions, 575 flow [2022-11-25 18:07:24,118 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:07:24,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 277 transitions, 575 flow [2022-11-25 18:07:24,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 277 transitions, 575 flow [2022-11-25 18:07:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 277 transitions, 575 flow [2022-11-25 18:07:24,232 INFO L130 PetriNetUnfolder]: 21/277 cut-off events. [2022-11-25 18:07:24,232 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:07:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 277 events. 21/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 254. Up to 2 conditions per place. [2022-11-25 18:07:24,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2022-11-25 18:07:47,881 INFO L134 LiptonReduction]: Checked pairs total: 9302 [2022-11-25 18:07:47,881 INFO L136 LiptonReduction]: Total number of compositions: 288 [2022-11-25 18:07:47,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:07:47,904 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;@7740f572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:07:47,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-25 18:07:47,907 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:07:47,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:07:47,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:07:47,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:07:47,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-25 18:07:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash 52075, now seen corresponding path program 1 times [2022-11-25 18:07:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:47,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285852462] [2022-11-25 18:07:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285852462] [2022-11-25 18:07:48,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285852462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:48,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:48,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:07:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684797024] [2022-11-25 18:07:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:48,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:48,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 592 [2022-11-25 18:07:48,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:48,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:07:48,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 592 [2022-11-25 18:07:48,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:08:00,954 INFO L130 PetriNetUnfolder]: 59431/74557 cut-off events. [2022-11-25 18:08:00,954 INFO L131 PetriNetUnfolder]: For 1102/1102 co-relation queries the response was YES. [2022-11-25 18:08:01,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150200 conditions, 74557 events. 59431/74557 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 5813. Compared 432144 event pairs, 40496 based on Foata normal form. 0/25971 useless extension candidates. Maximal degree in co-relation 66046. Up to 36533 conditions per place. [2022-11-25 18:08:01,473 INFO L137 encePairwiseOnDemand]: 569/592 looper letters, 91 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2022-11-25 18:08:01,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2022-11-25 18:08:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:08:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2022-11-25 18:08:01,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4740990990990991 [2022-11-25 18:08:01,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2022-11-25 18:08:01,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2022-11-25 18:08:01,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:08:01,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2022-11-25 18:08:01,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,526 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 842 transitions. [2022-11-25 18:08:01,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2022-11-25 18:08:02,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 18:08:02,238 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 180 flow [2022-11-25 18:08:02,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2022-11-25 18:08:02,245 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2022-11-25 18:08:02,245 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 180 flow [2022-11-25 18:08:02,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:02,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:08:02,246 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:08:02,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:08:02,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-25 18:08:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1616986, now seen corresponding path program 1 times [2022-11-25 18:08:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:02,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546541602] [2022-11-25 18:08:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546541602] [2022-11-25 18:08:02,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546541602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511053127] [2022-11-25 18:08:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:02,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:02,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:02,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:08:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:02,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:08:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:02,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:08:02,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511053127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:02,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:08:02,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 18:08:02,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155977646] [2022-11-25 18:08:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:08:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:08:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:08:02,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 592 [2022-11-25 18:08:02,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:02,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:08:02,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 592 [2022-11-25 18:08:02,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:08:13,288 INFO L130 PetriNetUnfolder]: 59431/74554 cut-off events. [2022-11-25 18:08:13,288 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:08:13,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149074 conditions, 74554 events. 59431/74554 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6248. Compared 434860 event pairs, 40496 based on Foata normal form. 0/25977 useless extension candidates. Maximal degree in co-relation 74517. Up to 36529 conditions per place. [2022-11-25 18:08:13,975 INFO L137 encePairwiseOnDemand]: 583/592 looper letters, 88 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2022-11-25 18:08:13,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 444 flow [2022-11-25 18:08:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:08:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:08:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1053 transitions. [2022-11-25 18:08:13,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44467905405405406 [2022-11-25 18:08:13,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1053 transitions. [2022-11-25 18:08:13,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1053 transitions. [2022-11-25 18:08:13,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:08:13,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1053 transitions. [2022-11-25 18:08:13,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 263.25) internal successors, (1053), 4 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:13,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:13,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 592.0) internal successors, (2960), 5 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:13,989 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 180 flow. Second operand 4 states and 1053 transitions. [2022-11-25 18:08:13,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 444 flow [2022-11-25 18:08:13,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:08:13,994 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 168 flow [2022-11-25 18:08:13,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2022-11-25 18:08:13,995 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2022-11-25 18:08:13,995 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 168 flow [2022-11-25 18:08:13,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:13,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:08:13,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:08:14,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:08:14,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:14,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-25 18:08:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1616985, now seen corresponding path program 1 times [2022-11-25 18:08:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:14,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150129319] [2022-11-25 18:08:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:14,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:14,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150129319] [2022-11-25 18:08:14,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150129319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:14,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271244905] [2022-11-25 18:08:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:14,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:14,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:14,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:14,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436f06bb-383f-42dd-a3ca-7c0b3be317e9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:08:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:14,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:08:14,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:14,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:08:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:14,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271244905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:08:14,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:08:14,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 18:08:14,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953893829] [2022-11-25 18:08:14,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:08:14,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:08:14,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:08:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:08:14,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 592 [2022-11-25 18:08:14,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:14,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:08:14,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 592 [2022-11-25 18:08:14,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand