./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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-4e7fbc6 [2022-11-23 15:30:01,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:30:01,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:30:01,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:30:01,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:30:01,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:30:01,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:30:01,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:30:01,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:30:01,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:30:01,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:30:01,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:30:01,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:30:01,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:30:01,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:30:01,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:30:01,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:30:01,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:30:01,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:30:01,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:30:01,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:30:01,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:30:01,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:30:01,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:30:01,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:30:01,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:30:01,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:30:01,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:30:01,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:30:01,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:30:01,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:30:01,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:30:01,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:30:01,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:30:01,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:30:01,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:30:01,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:30:01,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:30:01,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:30:01,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:30:01,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:30:01,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:30:01,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:30:01,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:30:01,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:30:01,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:30:01,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:30:01,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:30:01,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:30:01,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:30:01,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:30:01,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:30:01,496 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:30:01,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:30:01,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:30:01,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:30:01,497 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:30:01,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:30:01,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:30:01,499 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:30:01,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:30:01,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:30:01,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:30:01,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:30:01,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:30:01,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:30:01,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:30:01,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:30:01,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:30:01,502 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:30:01,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:30:01,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:30:01,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:30:01,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:30:01,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:30:01,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:30:01,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:01,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:30:01,505 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:30:01,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:30:01,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:30:01,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:30:01,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:30:01,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:30:01,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:30:01,507 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_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-11-23 15:30:01,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:30:01,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:30:01,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:30:01,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:30:01,877 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:30:01,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-23 15:30:05,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:30:05,586 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:30:05,587 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-23 15:30:05,609 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/data/0c16991d7/ccb6b745e8384246a05da9d03a33b0e1/FLAG419a7086a [2022-11-23 15:30:05,635 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/data/0c16991d7/ccb6b745e8384246a05da9d03a33b0e1 [2022-11-23 15:30:05,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:30:05,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:30:05,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:05,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:30:05,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:30:05,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:05" (1/1) ... [2022-11-23 15:30:05,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@beaaf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:05, skipping insertion in model container [2022-11-23 15:30:05,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:05" (1/1) ... [2022-11-23 15:30:05,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:30:05,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:30:06,313 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_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-23 15:30:06,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:06,403 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:30:06,476 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_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-23 15:30:06,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:06,597 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:30:06,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06 WrapperNode [2022-11-23 15:30:06,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:06,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:06,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:30:06,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:30:06,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,688 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-23 15:30:06,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:06,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:30:06,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:30:06,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:30:06,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:30:06,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:30:06,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:30:06,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:30:06,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (1/1) ... [2022-11-23 15:30:06,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:06,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:30:06,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4467e4d1-3e5e-4b82-85a8-a0d0d6439089/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-23 15:30:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:30:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-23 15:30:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-23 15:30:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:30:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 15:30:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:30:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:30:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:30:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:30:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:30:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:30:06,873 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 15:30:07,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:30:07,058 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:30:07,691 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:30:07,704 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:30:07,704 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-23 15:30:07,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:07 BoogieIcfgContainer [2022-11-23 15:30:07,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:30:07,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:30:07,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:30:07,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:30:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:30:05" (1/3) ... [2022-11-23 15:30:07,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c0696b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:07, skipping insertion in model container [2022-11-23 15:30:07,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:06" (2/3) ... [2022-11-23 15:30:07,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c0696b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:07, skipping insertion in model container [2022-11-23 15:30:07,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:07" (3/3) ... [2022-11-23 15:30:07,719 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-11-23 15:30:07,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 15:30:07,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:30:07,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 15:30:07,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 15:30:07,894 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 15:30:07,973 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:30:07,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 243 transitions, 508 flow [2022-11-23 15:30:08,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 243 transitions, 508 flow [2022-11-23 15:30:08,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-11-23 15:30:08,252 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-11-23 15:30:08,253 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-23 15:30:08,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 464 events. 52/464 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1895 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-23 15:30:08,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 18686 [2022-11-23 15:30:18,914 INFO L134 LiptonReduction]: Checked pairs total: 33999 [2022-11-23 15:30:18,915 INFO L136 LiptonReduction]: Total number of compositions: 216 [2022-11-23 15:30:18,924 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 75 transitions, 172 flow [2022-11-23 15:30:19,093 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3159 states, 3077 states have (on average 3.205069873253169) internal successors, (9862), 3158 states have internal predecessors, (9862), 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) [2022-11-23 15:30:19,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:30:19,130 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=FINITE_AUTOMATA, 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;@30007f31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:30:19,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 15:30:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 3159 states, 3077 states have (on average 3.205069873253169) internal successors, (9862), 3158 states have internal predecessors, (9862), 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) [2022-11-23 15:30:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:30:19,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:19,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:30:19,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 15:30:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 29211979, now seen corresponding path program 1 times [2022-11-23 15:30:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:19,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843461123] [2022-11-23 15:30:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:19,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843461123] [2022-11-23 15:30:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843461123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:19,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:19,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:30:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644661173] [2022-11-23 15:30:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:19,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:30:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:30:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:19,554 INFO L87 Difference]: Start difference. First operand has 3159 states, 3077 states have (on average 3.205069873253169) internal successors, (9862), 3158 states have internal predecessors, (9862), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 15:30:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:19,834 INFO L93 Difference]: Finished difference Result 3001 states and 8134 transitions. [2022-11-23 15:30:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:30:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-11-23 15:30:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:19,885 INFO L225 Difference]: With dead ends: 3001 [2022-11-23 15:30:19,885 INFO L226 Difference]: Without dead ends: 2819 [2022-11-23 15:30:19,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:30:19,892 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:19,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:30:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2022-11-23 15:30:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2819. [2022-11-23 15:30:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2759 states have (on average 2.764407393983327) internal successors, (7627), 2818 states have internal predecessors, (7627), 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) [2022-11-23 15:30:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 7627 transitions. [2022-11-23 15:30:20,089 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 7627 transitions. Word has length 4 [2022-11-23 15:30:20,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:20,089 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 7627 transitions. [2022-11-23 15:30:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 15:30:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 7627 transitions. [2022-11-23 15:30:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:30:20,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:20,091 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 15:30:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:30:20,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 15:30:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1992025106, now seen corresponding path program 1 times [2022-11-23 15:30:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678477251] [2022-11-23 15:30:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:30:20,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:30:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:30:20,243 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:30:20,244 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:30:20,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-23 15:30:20,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-23 15:30:20,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-23 15:30:20,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-23 15:30:20,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-23 15:30:20,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-23 15:30:20,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-23 15:30:20,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-23 15:30:20,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-23 15:30:20,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-23 15:30:20,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-23 15:30:20,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-23 15:30:20,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-23 15:30:20,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-23 15:30:20,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-23 15:30:20,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-23 15:30:20,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-23 15:30:20,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-23 15:30:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:30:20,324 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:30:20,327 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 15:30:20,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 15:30:20,432 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-23 15:30:20,448 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 15:30:20,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 370 transitions, 788 flow [2022-11-23 15:30:20,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 370 transitions, 788 flow [2022-11-23 15:30:20,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-11-23 15:30:20,886 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-11-23 15:30:20,886 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-23 15:30:20,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 1413 events. 191/1413 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9109 event pairs, 2 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 873. Up to 32 conditions per place. [2022-11-23 15:30:21,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 68940 [2022-11-23 15:31:18,051 INFO L134 LiptonReduction]: Checked pairs total: 137296 [2022-11-23 15:31:18,052 INFO L136 LiptonReduction]: Total number of compositions: 323 [2022-11-23 15:31:18,053 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 127 transitions, 302 flow [2022-11-23 15:32:00,194 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 813943 states, 813014 states have (on average 5.466688150511553) internal successors, (4444494), 813942 states have internal predecessors, (4444494), 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) [2022-11-23 15:32:00,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:32:00,197 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=FINITE_AUTOMATA, 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;@30007f31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:32:00,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-23 15:32:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 813943 states, 813014 states have (on average 5.466688150511553) internal successors, (4444494), 813942 states have internal predecessors, (4444494), 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) [2022-11-23 15:32:01,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:32:01,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:01,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:32:01,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 15:32:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1685437166, now seen corresponding path program 1 times [2022-11-23 15:32:01,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082152669] [2022-11-23 15:32:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:01,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082152669] [2022-11-23 15:32:01,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082152669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:01,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:01,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:32:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386364838] [2022-11-23 15:32:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:32:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:32:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:03,431 INFO L87 Difference]: Start difference. First operand has 813943 states, 813014 states have (on average 5.466688150511553) internal successors, (4444494), 813942 states have internal predecessors, (4444494), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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)