./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN --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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- 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-6b4ec56 [2022-11-20 10:38:20,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:38:20,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:38:20,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:38:20,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:38:20,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:38:20,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:38:20,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:38:20,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:38:20,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:38:20,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:38:20,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:38:20,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:38:20,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:38:20,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:38:20,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:38:20,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:38:20,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:38:20,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:38:20,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:38:20,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:38:20,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:38:20,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:38:20,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:38:20,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:38:20,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:38:20,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:38:20,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:38:20,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:38:20,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:38:20,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:38:20,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:38:20,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:38:20,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:38:20,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:38:20,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:38:20,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:38:20,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:38:20,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:38:20,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:38:20,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:38:20,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:38:20,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:38:20,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:38:20,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:38:20,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:38:20,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:38:20,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:38:20,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:38:20,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:38:20,545 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:38:20,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:38:20,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:38:20,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:38:20,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:38:20,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:38:20,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:38:20,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:38:20,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:38:20,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:38:20,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:38:20,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:38:20,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:38:20,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:38:20,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:38:20,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:38:20,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:38:20,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:38:20,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:20,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:38:20,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:38:20,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:38:20,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:38:20,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:38:20,551 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:38:20,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:38:20,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:38:20,552 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_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2022-11-20 10:38:20,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:38:20,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:38:20,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:38:20,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:38:20,882 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:38:20,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-20 10:38:24,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:38:24,705 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:38:24,706 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-11-20 10:38:24,714 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/data/e5ae6576a/ca409fa2aee44773812262648fc71b1c/FLAGe9887aa34 [2022-11-20 10:38:24,731 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/data/e5ae6576a/ca409fa2aee44773812262648fc71b1c [2022-11-20 10:38:24,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:38:24,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:38:24,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:24,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:38:24,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:38:24,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:24" (1/1) ... [2022-11-20 10:38:24,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b203e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:24, skipping insertion in model container [2022-11-20 10:38:24,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:24" (1/1) ... [2022-11-20 10:38:24,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:38:24,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:38:25,125 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_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-20 10:38:25,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:25,164 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:38:25,235 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_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-11-20 10:38:25,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:25,262 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:38:25,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25 WrapperNode [2022-11-20 10:38:25,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:25,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:25,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:38:25,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:38:25,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,328 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 349 [2022-11-20 10:38:25,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:25,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:38:25,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:38:25,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:38:25,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:38:25,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:38:25,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:38:25,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:38:25,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (1/1) ... [2022-11-20 10:38:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:25,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:38:25,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:38:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:38:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:38:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:38:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:38:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:38:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:38:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:38:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:38:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:38:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:38:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 10:38:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 10:38:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:38:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:38:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:38:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:38:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:38:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:38:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:38:25,502 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:38:25,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:38:25,707 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:38:26,466 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:38:27,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:38:27,259 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:38:27,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:27 BoogieIcfgContainer [2022-11-20 10:38:27,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:38:27,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:38:27,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:38:27,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:38:27,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:38:24" (1/3) ... [2022-11-20 10:38:27,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d0a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:27, skipping insertion in model container [2022-11-20 10:38:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:25" (2/3) ... [2022-11-20 10:38:27,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d0a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:38:27, skipping insertion in model container [2022-11-20 10:38:27,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:38:27" (3/3) ... [2022-11-20 10:38:27,272 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-11-20 10:38:27,284 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:38:27,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:38:27,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-20 10:38:27,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:38:27,622 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:38:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 262 transitions, 556 flow [2022-11-20 10:38:27,930 INFO L130 PetriNetUnfolder]: 18/258 cut-off events. [2022-11-20 10:38:27,930 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:38:27,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 258 events. 18/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 273 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2022-11-20 10:38:27,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 262 transitions, 556 flow [2022-11-20 10:38:27,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 235 transitions, 491 flow [2022-11-20 10:38:27,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:38:27,982 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;@f5a7205, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:38:27,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-20 10:38:28,016 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-20 10:38:28,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:38:28,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:38:28,018 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] [2022-11-20 10:38:28,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 10:38:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash 237765901, now seen corresponding path program 1 times [2022-11-20 10:38:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358334341] [2022-11-20 10:38:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358334341] [2022-11-20 10:38:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358334341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:28,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:28,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:38:28,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674715290] [2022-11-20 10:38:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:28,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:38:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:38:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:38:28,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-20 10:38:28,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 235 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2022-11-20 10:38:28,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:38:28,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-20 10:38:28,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:38:40,653 INFO L130 PetriNetUnfolder]: 23681/32767 cut-off events. [2022-11-20 10:38:40,654 INFO L131 PetriNetUnfolder]: For 5360/5368 co-relation queries the response was YES. [2022-11-20 10:38:40,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64022 conditions, 32767 events. 23681/32767 cut-off events. For 5360/5368 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 197127 event pairs, 11436 based on Foata normal form. 4922/15191 useless extension candidates. Maximal degree in co-relation 31432. Up to 14260 conditions per place. [2022-11-20 10:38:41,049 INFO L137 encePairwiseOnDemand]: 230/262 looper letters, 90 selfloop transitions, 9 changer transitions 5/262 dead transitions. [2022-11-20 10:38:41,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 262 transitions, 764 flow [2022-11-20 10:38:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:38:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:38:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2022-11-20 10:38:41,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183206106870229 [2022-11-20 10:38:41,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2022-11-20 10:38:41,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2022-11-20 10:38:41,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:38:41,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2022-11-20 10:38:41,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.4) internal successors, (1072), 5 states have internal predecessors, (1072), 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) [2022-11-20 10:38:41,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 10:38:41,104 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 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) [2022-11-20 10:38:41,111 INFO L175 Difference]: Start difference. First operand has 231 places, 235 transitions, 491 flow. Second operand 5 states and 1072 transitions. [2022-11-20 10:38:41,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 262 transitions, 764 flow [2022-11-20 10:38:41,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 262 transitions, 738 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:38:41,142 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 497 flow [2022-11-20 10:38:41,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=223, PETRI_TRANSITIONS=218} [2022-11-20 10:38:41,154 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, -8 predicate places. [2022-11-20 10:38:41,155 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 497 flow [2022-11-20 10:38:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2022-11-20 10:38:41,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:38:41,157 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 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] [2022-11-20 10:38:41,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:38:41,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 10:38:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash -820488820, now seen corresponding path program 1 times [2022-11-20 10:38:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:41,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353096710] [2022-11-20 10:38:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353096710] [2022-11-20 10:38:41,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353096710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:41,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652822280] [2022-11-20 10:38:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:41,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:41,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:41,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:41,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:38:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:41,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:38:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:41,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:42,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652822280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:42,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:38:42,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:38:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102426836] [2022-11-20 10:38:42,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:38:42,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:38:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:38:42,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-20 10:38:42,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 218 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 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) [2022-11-20 10:38:42,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:38:42,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-20 10:38:42,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:39:05,044 INFO L130 PetriNetUnfolder]: 59201/81770 cut-off events. [2022-11-20 10:39:05,045 INFO L131 PetriNetUnfolder]: For 4017/4037 co-relation queries the response was YES. [2022-11-20 10:39:05,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155749 conditions, 81770 events. 59201/81770 cut-off events. For 4017/4037 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 514279 event pairs, 28590 based on Foata normal form. 6/25556 useless extension candidates. Maximal degree in co-relation 124380. Up to 14253 conditions per place. [2022-11-20 10:39:05,946 INFO L137 encePairwiseOnDemand]: 247/262 looper letters, 201 selfloop transitions, 40 changer transitions 0/399 dead transitions. [2022-11-20 10:39:05,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 399 transitions, 1423 flow [2022-11-20 10:39:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:39:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:39:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3613 transitions. [2022-11-20 10:39:05,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7661153519932146 [2022-11-20 10:39:05,972 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3613 transitions. [2022-11-20 10:39:05,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3613 transitions. [2022-11-20 10:39:05,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:39:05,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3613 transitions. [2022-11-20 10:39:05,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 200.72222222222223) internal successors, (3613), 18 states have internal predecessors, (3613), 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) [2022-11-20 10:39:06,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 262.0) internal successors, (4978), 19 states have internal predecessors, (4978), 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) [2022-11-20 10:39:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 262.0) internal successors, (4978), 19 states have internal predecessors, (4978), 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) [2022-11-20 10:39:06,021 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 497 flow. Second operand 18 states and 3613 transitions. [2022-11-20 10:39:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 399 transitions, 1423 flow [2022-11-20 10:39:06,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 399 transitions, 1418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:39:06,034 INFO L231 Difference]: Finished difference. Result has 238 places, 245 transitions, 730 flow [2022-11-20 10:39:06,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=730, PETRI_PLACES=238, PETRI_TRANSITIONS=245} [2022-11-20 10:39:06,036 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, 7 predicate places. [2022-11-20 10:39:06,037 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 245 transitions, 730 flow [2022-11-20 10:39:06,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 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) [2022-11-20 10:39:06,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:39:06,040 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 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] [2022-11-20 10:39:06,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 10:39:06,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-20 10:39:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash 334651233, now seen corresponding path program 1 times [2022-11-20 10:39:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:06,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364975411] [2022-11-20 10:39:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:06,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364975411] [2022-11-20 10:39:06,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364975411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:06,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965719436] [2022-11-20 10:39:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:06,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:06,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:06,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197ae1ab-7e44-4d71-9ca0-3f8d79ce52dd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:39:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:06,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:39:06,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:06,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:06,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965719436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:06,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:06,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:39:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071243429] [2022-11-20 10:39:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:06,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:39:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:39:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:39:06,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 262 [2022-11-20 10:39:06,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 245 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 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) [2022-11-20 10:39:06,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:39:06,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 262 [2022-11-20 10:39:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand