./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 --- 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-2329fc7 [2022-12-14 15:05:13,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:05:13,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:05:13,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:05:13,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:05:13,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:05:13,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:05:13,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:05:13,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:05:13,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:05:13,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:05:13,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:05:13,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:05:13,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:05:13,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:05:13,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:05:13,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:05:13,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:05:13,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:05:13,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:05:13,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:05:13,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:05:13,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:05:13,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:05:13,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:05:13,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:05:13,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:05:13,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:05:13,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:05:13,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:05:13,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:05:13,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:05:13,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:05:13,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:05:13,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:05:13,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:05:13,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:05:13,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:05:13,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:05:13,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:05:13,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:05:13,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 15:05:13,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:05:13,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:05:13,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:05:13,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:05:13,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:05:13,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:05:13,235 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:05:13,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:05:13,235 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:05:13,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:05:13,236 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:05:13,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:05:13,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:05:13,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:05:13,237 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:05:13,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:05:13,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:05:13,237 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:05:13,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:05:13,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:05:13,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:05:13,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:05:13,240 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 15:05:13,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:05:13,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:05:13,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:05:13,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:05:13,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:05:13,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:05:13,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:05:13,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:05:13,242 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:05:13,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:05:13,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:05:13,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:05:13,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:05:13,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:05:13,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:05:13,243 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_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 [2022-12-14 15:05:13,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:05:13,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:05:13,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:05:13,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:05:13,433 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:05:13,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2022-12-14 15:05:16,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:05:16,204 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:05:16,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2022-12-14 15:05:16,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/data/1cfa82f65/719c165182dd4f45b936739772ecb274/FLAG898cc627e [2022-12-14 15:05:16,223 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/data/1cfa82f65/719c165182dd4f45b936739772ecb274 [2022-12-14 15:05:16,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:05:16,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:05:16,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:05:16,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:05:16,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:05:16,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b817334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16, skipping insertion in model container [2022-12-14 15:05:16,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:05:16,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:05:16,460 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_95d5ab23-a051-4b15-be55-955ea98cb275/sv-benchmarks/c/pthread-nondet/nondet-array-2.i[30035,30048] [2022-12-14 15:05:16,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:05:16,483 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:05:16,506 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_95d5ab23-a051-4b15-be55-955ea98cb275/sv-benchmarks/c/pthread-nondet/nondet-array-2.i[30035,30048] [2022-12-14 15:05:16,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:05:16,535 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:05:16,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16 WrapperNode [2022-12-14 15:05:16,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:05:16,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:05:16,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:05:16,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:05:16,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,568 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-12-14 15:05:16,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:05:16,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:05:16,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:05:16,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:05:16,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:05:16,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:05:16,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:05:16,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:05:16,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (1/1) ... [2022-12-14 15:05:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:05:16,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:16,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:05:16,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d5ab23-a051-4b15-be55-955ea98cb275/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 15:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-12-14 15:05:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-12-14 15:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:05:16,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:05:16,666 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 15:05:16,776 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:05:16,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:05:16,962 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:05:16,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:05:16,968 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 15:05:16,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:16 BoogieIcfgContainer [2022-12-14 15:05:16,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:05:16,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:05:16,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:05:16,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:05:16,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:05:16" (1/3) ... [2022-12-14 15:05:16,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8c374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:16, skipping insertion in model container [2022-12-14 15:05:16,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:16" (2/3) ... [2022-12-14 15:05:16,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8c374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:16, skipping insertion in model container [2022-12-14 15:05:16,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:16" (3/3) ... [2022-12-14 15:05:16,977 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2022-12-14 15:05:16,985 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 15:05:16,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:05:16,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-14 15:05:16,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 15:05:17,062 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 15:05:17,103 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 15:05:17,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 115 transitions, 238 flow [2022-12-14 15:05:17,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 115 transitions, 238 flow [2022-12-14 15:05:17,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 115 transitions, 238 flow [2022-12-14 15:05:17,175 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-12-14 15:05:17,176 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-14 15:05:17,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 12/164 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 421 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-12-14 15:05:17,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 2310 [2022-12-14 15:05:19,123 INFO L134 LiptonReduction]: Checked pairs total: 7256 [2022-12-14 15:05:19,124 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-12-14 15:05:19,129 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 74 flow [2022-12-14 15:05:19,155 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 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) [2022-12-14 15:05:19,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:05:19,177 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;@7056e1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:05:19,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-14 15:05:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 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) [2022-12-14 15:05:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:05:19,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:19,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:05:19,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-14 15:05:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash 12878978, now seen corresponding path program 1 times [2022-12-14 15:05:19,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:19,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359445340] [2022-12-14 15:05:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:19,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359445340] [2022-12-14 15:05:19,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359445340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:19,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:19,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:05:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679975134] [2022-12-14 15:05:19,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:05:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:05:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:05:19,361 INFO L87 Difference]: Start difference. First operand has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 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 2 states, 1 states have (on average 4.0) 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) [2022-12-14 15:05:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:19,394 INFO L93 Difference]: Finished difference Result 179 states and 321 transitions. [2022-12-14 15:05:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:05:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) 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 [2022-12-14 15:05:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:19,404 INFO L225 Difference]: With dead ends: 179 [2022-12-14 15:05:19,404 INFO L226 Difference]: Without dead ends: 177 [2022-12-14 15:05:19,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:05:19,407 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:19,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:05:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-14 15:05:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-12-14 15:05:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 167 states have (on average 1.904191616766467) internal successors, (318), 176 states have internal predecessors, (318), 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) [2022-12-14 15:05:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 318 transitions. [2022-12-14 15:05:19,445 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 318 transitions. Word has length 4 [2022-12-14 15:05:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:19,445 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 318 transitions. [2022-12-14 15:05:19,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) 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) [2022-12-14 15:05:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 318 transitions. [2022-12-14 15:05:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 15:05:19,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:19,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 15:05:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:05:19,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-14 15:05:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash -508165303, now seen corresponding path program 1 times [2022-12-14 15:05:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:19,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336898445] [2022-12-14 15:05:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:19,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:05:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:19,510 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:05:19,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:05:19,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-14 15:05:19,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-12-14 15:05:19,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-12-14 15:05:19,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-12-14 15:05:19,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-12-14 15:05:19,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-12-14 15:05:19,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-12-14 15:05:19,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-12-14 15:05:19,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-12-14 15:05:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:05:19,516 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 15:05:19,517 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 15:05:19,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 15:05:19,531 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 15:05:19,533 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 15:05:19,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 294 flow [2022-12-14 15:05:19,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 294 flow [2022-12-14 15:05:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 294 flow [2022-12-14 15:05:19,573 INFO L130 PetriNetUnfolder]: 23/293 cut-off events. [2022-12-14 15:05:19,573 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-12-14 15:05:19,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 23/293 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 907 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-12-14 15:05:19,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 5964 [2022-12-14 15:05:21,656 INFO L134 LiptonReduction]: Checked pairs total: 28199 [2022-12-14 15:05:21,656 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-12-14 15:05:21,657 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 58 transitions, 134 flow [2022-12-14 15:05:21,767 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 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) [2022-12-14 15:05:21,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:05:21,769 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;@7056e1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:05:21,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 15:05:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 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) [2022-12-14 15:05:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:05:21,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:21,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:05:21,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-14 15:05:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash 643614562, now seen corresponding path program 1 times [2022-12-14 15:05:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130288259] [2022-12-14 15:05:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:21,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130288259] [2022-12-14 15:05:21,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130288259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:21,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:21,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:05:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538841428] [2022-12-14 15:05:21,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:05:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:05:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:21,848 INFO L87 Difference]: Start difference. First operand has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 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), 3 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) [2022-12-14 15:05:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:21,998 INFO L93 Difference]: Finished difference Result 7289 states and 19693 transitions. [2022-12-14 15:05:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:05:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) Word has length 5 [2022-12-14 15:05:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:22,029 INFO L225 Difference]: With dead ends: 7289 [2022-12-14 15:05:22,029 INFO L226 Difference]: Without dead ends: 7285 [2022-12-14 15:05:22,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:22,030 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:22,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 73 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2022-12-14 15:05:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 5665. [2022-12-14 15:05:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5665 states, 5578 states have (on average 2.7940121907493727) internal successors, (15585), 5664 states have internal predecessors, (15585), 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) [2022-12-14 15:05:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 15585 transitions. [2022-12-14 15:05:22,197 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 15585 transitions. Word has length 5 [2022-12-14 15:05:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 5665 states and 15585 transitions. [2022-12-14 15:05:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-12-14 15:05:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 15585 transitions. [2022-12-14 15:05:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:05:22,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:22,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:22,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:05:22,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-14 15:05:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -530669579, now seen corresponding path program 1 times [2022-12-14 15:05:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:22,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021485538] [2022-12-14 15:05:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:22,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:22,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021485538] [2022-12-14 15:05:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021485538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:22,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:22,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:05:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477322097] [2022-12-14 15:05:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:05:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:05:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:05:22,275 INFO L87 Difference]: Start difference. First operand 5665 states and 15585 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 15:05:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:22,418 INFO L93 Difference]: Finished difference Result 4659 states and 12081 transitions. [2022-12-14 15:05:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:05:22,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-12-14 15:05:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:22,433 INFO L225 Difference]: With dead ends: 4659 [2022-12-14 15:05:22,433 INFO L226 Difference]: Without dead ends: 4655 [2022-12-14 15:05:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:05:22,434 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 80 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 111 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2022-12-14 15:05:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 4271. [2022-12-14 15:05:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4197 states have (on average 2.7047891350964974) internal successors, (11352), 4270 states have internal predecessors, (11352), 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) [2022-12-14 15:05:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 11352 transitions. [2022-12-14 15:05:22,583 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 11352 transitions. Word has length 8 [2022-12-14 15:05:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:22,584 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 11352 transitions. [2022-12-14 15:05:22,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 15:05:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 11352 transitions. [2022-12-14 15:05:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:05:22,585 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:22,585 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 15:05:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:05:22,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-14 15:05:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash -681597997, now seen corresponding path program 1 times [2022-12-14 15:05:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837295325] [2022-12-14 15:05:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:22,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:22,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:05:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:22,616 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:05:22,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:05:22,616 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-12-14 15:05:22,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-12-14 15:05:22,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-12-14 15:05:22,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-12-14 15:05:22,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-12-14 15:05:22,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-12-14 15:05:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:05:22,618 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 15:05:22,618 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 15:05:22,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 15:05:22,645 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 15:05:22,648 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 15:05:22,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 161 transitions, 352 flow [2022-12-14 15:05:22,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 161 transitions, 352 flow [2022-12-14 15:05:22,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 161 transitions, 352 flow [2022-12-14 15:05:22,743 INFO L130 PetriNetUnfolder]: 45/519 cut-off events. [2022-12-14 15:05:22,743 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-12-14 15:05:22,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 519 events. 45/519 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1953 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-12-14 15:05:22,756 INFO L119 LiptonReduction]: Number of co-enabled transitions 10458 [2022-12-14 15:05:24,758 INFO L134 LiptonReduction]: Checked pairs total: 60937 [2022-12-14 15:05:24,758 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-12-14 15:05:24,759 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 75 transitions, 180 flow [2022-12-14 15:05:26,446 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 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) [2022-12-14 15:05:26,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:05:26,447 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;@7056e1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:05:26,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-14 15:05:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 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) [2022-12-14 15:05:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:05:26,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:26,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:05:26,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 15:05:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 916415787, now seen corresponding path program 1 times [2022-12-14 15:05:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:26,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222133169] [2022-12-14 15:05:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:26,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:26,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222133169] [2022-12-14 15:05:26,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222133169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:26,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:26,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:05:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173893617] [2022-12-14 15:05:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:05:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:05:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:26,807 INFO L87 Difference]: Start difference. First operand has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 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), 3 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) [2022-12-14 15:05:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:27,903 INFO L93 Difference]: Finished difference Result 142613 states and 502592 transitions. [2022-12-14 15:05:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:05:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) Word has length 5 [2022-12-14 15:05:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:28,799 INFO L225 Difference]: With dead ends: 142613 [2022-12-14 15:05:28,799 INFO L226 Difference]: Without dead ends: 142605 [2022-12-14 15:05:28,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:28,800 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 64 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:28,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 89 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142605 states. [2022-12-14 15:05:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142605 to 98895. [2022-12-14 15:05:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98895 states, 98436 states have (on average 3.634361412491365) internal successors, (357752), 98894 states have internal predecessors, (357752), 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) [2022-12-14 15:05:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98895 states to 98895 states and 357752 transitions. [2022-12-14 15:05:32,352 INFO L78 Accepts]: Start accepts. Automaton has 98895 states and 357752 transitions. Word has length 5 [2022-12-14 15:05:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:32,353 INFO L495 AbstractCegarLoop]: Abstraction has 98895 states and 357752 transitions. [2022-12-14 15:05:32,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-12-14 15:05:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 98895 states and 357752 transitions. [2022-12-14 15:05:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:05:32,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:32,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:05:32,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 15:05:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1335052155, now seen corresponding path program 1 times [2022-12-14 15:05:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749123540] [2022-12-14 15:05:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:32,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749123540] [2022-12-14 15:05:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749123540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:32,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:05:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730125354] [2022-12-14 15:05:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:32,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:05:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:05:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:05:32,421 INFO L87 Difference]: Start difference. First operand 98895 states and 357752 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 15:05:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:33,091 INFO L93 Difference]: Finished difference Result 85258 states and 293157 transitions. [2022-12-14 15:05:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:05:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-12-14 15:05:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:33,448 INFO L225 Difference]: With dead ends: 85258 [2022-12-14 15:05:33,448 INFO L226 Difference]: Without dead ends: 85253 [2022-12-14 15:05:33,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:05:33,449 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 113 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:33,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 149 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85253 states. [2022-12-14 15:05:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85253 to 76122. [2022-12-14 15:05:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76122 states, 75720 states have (on average 3.535433174854728) internal successors, (267703), 76121 states have internal predecessors, (267703), 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) [2022-12-14 15:05:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76122 states to 76122 states and 267703 transitions. [2022-12-14 15:05:35,677 INFO L78 Accepts]: Start accepts. Automaton has 76122 states and 267703 transitions. Word has length 8 [2022-12-14 15:05:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:35,677 INFO L495 AbstractCegarLoop]: Abstraction has 76122 states and 267703 transitions. [2022-12-14 15:05:35,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 15:05:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 76122 states and 267703 transitions. [2022-12-14 15:05:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 15:05:35,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:35,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:35,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:05:35,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 15:05:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1010784519, now seen corresponding path program 1 times [2022-12-14 15:05:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:35,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376649286] [2022-12-14 15:05:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:05:35,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:35,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376649286] [2022-12-14 15:05:35,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376649286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:35,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:35,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 15:05:35,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954056338] [2022-12-14 15:05:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:35,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:05:35,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:05:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:05:35,879 INFO L87 Difference]: Start difference. First operand 76122 states and 267703 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-12-14 15:05:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:36,854 INFO L93 Difference]: Finished difference Result 100180 states and 349615 transitions. [2022-12-14 15:05:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:05:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-12-14 15:05:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:37,342 INFO L225 Difference]: With dead ends: 100180 [2022-12-14 15:05:37,342 INFO L226 Difference]: Without dead ends: 100175 [2022-12-14 15:05:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:05:37,343 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 137 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 223 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:05:37,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100175 states. [2022-12-14 15:05:39,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100175 to 93845. [2022-12-14 15:05:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93845 states, 93450 states have (on average 3.549983948635634) internal successors, (331746), 93844 states have internal predecessors, (331746), 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) [2022-12-14 15:05:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93845 states to 93845 states and 331746 transitions. [2022-12-14 15:05:39,980 INFO L78 Accepts]: Start accepts. Automaton has 93845 states and 331746 transitions. Word has length 12 [2022-12-14 15:05:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:39,980 INFO L495 AbstractCegarLoop]: Abstraction has 93845 states and 331746 transitions. [2022-12-14 15:05:39,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-12-14 15:05:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 93845 states and 331746 transitions. [2022-12-14 15:05:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 15:05:39,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:39,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:05:39,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 15:05:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1727909745, now seen corresponding path program 1 times [2022-12-14 15:05:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:39,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506993979] [2022-12-14 15:05:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:39,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:40,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506993979] [2022-12-14 15:05:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506993979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:40,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:40,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 15:05:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23361456] [2022-12-14 15:05:40,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:05:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:05:40,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:05:40,152 INFO L87 Difference]: Start difference. First operand 93845 states and 331746 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-12-14 15:05:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:41,572 INFO L93 Difference]: Finished difference Result 155210 states and 555227 transitions. [2022-12-14 15:05:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:05:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-12-14 15:05:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:42,173 INFO L225 Difference]: With dead ends: 155210 [2022-12-14 15:05:42,173 INFO L226 Difference]: Without dead ends: 155210 [2022-12-14 15:05:42,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:05:42,173 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 168 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:42,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 204 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 15:05:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155210 states. [2022-12-14 15:05:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155210 to 109624. [2022-12-14 15:05:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109624 states, 109229 states have (on average 3.5626436202839904) internal successors, (389144), 109623 states have internal predecessors, (389144), 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) [2022-12-14 15:05:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109624 states to 109624 states and 389144 transitions. [2022-12-14 15:05:45,751 INFO L78 Accepts]: Start accepts. Automaton has 109624 states and 389144 transitions. Word has length 12 [2022-12-14 15:05:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:45,751 INFO L495 AbstractCegarLoop]: Abstraction has 109624 states and 389144 transitions. [2022-12-14 15:05:45,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-12-14 15:05:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 109624 states and 389144 transitions. [2022-12-14 15:05:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 15:05:45,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:45,752 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 15:05:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:05:45,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 15:05:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash 6083016, now seen corresponding path program 1 times [2022-12-14 15:05:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994142169] [2022-12-14 15:05:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:45,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:05:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:05:45,777 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:05:45,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-14 15:05:45,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-14 15:05:45,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-14 15:05:45,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:05:45,779 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-14 15:05:45,779 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 15:05:45,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 15:05:45,797 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 15:05:45,800 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 15:05:45,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 184 transitions, 412 flow [2022-12-14 15:05:45,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 184 transitions, 412 flow [2022-12-14 15:05:45,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 184 transitions, 412 flow [2022-12-14 15:05:45,901 INFO L130 PetriNetUnfolder]: 91/941 cut-off events. [2022-12-14 15:05:45,901 INFO L131 PetriNetUnfolder]: For 48/52 co-relation queries the response was YES. [2022-12-14 15:05:45,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 941 events. 91/941 cut-off events. For 48/52 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4370 event pairs, 6 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 539. Up to 32 conditions per place. [2022-12-14 15:05:45,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 15960 [2022-12-14 15:05:48,146 INFO L134 LiptonReduction]: Checked pairs total: 88269 [2022-12-14 15:05:48,146 INFO L136 LiptonReduction]: Total number of compositions: 104 [2022-12-14 15:05:48,146 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 92 transitions, 228 flow [2022-12-14 15:06:26,892 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1717460 states, 1715074 states have (on average 4.56706882618476) internal successors, (7832861), 1717459 states have internal predecessors, (7832861), 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) [2022-12-14 15:06:26,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:06:26,893 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;@7056e1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:06:26,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-14 15:06:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1717460 states, 1715074 states have (on average 4.56706882618476) internal successors, (7832861), 1717459 states have internal predecessors, (7832861), 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) [2022-12-14 15:06:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:06:29,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:06:29,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:06:29,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2022-12-14 15:06:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:06:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1213439876, now seen corresponding path program 1 times [2022-12-14 15:06:29,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:06:29,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262941373] [2022-12-14 15:06:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:06:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:06:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:06:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:06:29,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:06:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262941373] [2022-12-14 15:06:29,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262941373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:06:29,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:06:29,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:06:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715565391] [2022-12-14 15:06:29,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:06:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:06:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:06:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:06:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:06:31,656 INFO L87 Difference]: Start difference. First operand has 1717460 states, 1715074 states have (on average 4.56706882618476) internal successors, (7832861), 1717459 states have internal predecessors, (7832861), 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), 3 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)