./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9 --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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:56:24,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:56:24,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:56:24,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:56:24,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:56:24,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:56:24,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:56:24,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:56:24,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:56:24,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:56:24,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:56:24,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:56:24,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:56:24,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:56:24,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:56:24,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:56:24,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:56:24,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:56:24,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:56:24,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:56:24,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:56:24,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:56:24,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:56:24,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:56:24,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:56:24,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:56:24,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:56:24,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:56:24,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:56:24,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:56:24,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:56:24,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:56:24,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:56:24,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:56:24,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:56:24,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:56:24,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:56:24,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:56:24,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:56:24,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:56:24,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:56:24,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-20 20:56:24,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:56:24,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:56:24,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:56:24,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:56:24,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:56:24,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:56:24,176 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:56:24,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:56:24,177 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:56:24,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:56:24,177 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:56:24,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:56:24,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:56:24,179 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:56:24,179 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:56:24,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:56:24,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:56:24,181 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:56:24,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:56:24,182 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:56:24,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:56:24,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:56:24,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:56:24,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:56:24,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:56:24,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:56:24,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:56:24,186 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 20:56:24,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:56:24,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:56:24,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:56:24,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:56:24,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:56:24,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:56:24,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:24,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:56:24,190 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:56:24,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:56:24,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:56:24,191 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:56:24,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:56:24,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:56:24,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:56:24,192 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_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-11-20 20:56:24,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:56:24,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:56:24,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:56:24,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:56:24,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:56:24,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-20 20:56:28,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:56:28,589 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:56:28,590 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-20 20:56:28,616 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/data/f161d0f72/49ce501e318141139f984925917e2a76/FLAGaaa538995 [2022-11-20 20:56:28,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/data/f161d0f72/49ce501e318141139f984925917e2a76 [2022-11-20 20:56:28,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:56:28,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:56:28,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:28,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:56:28,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:56:28,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:28" (1/1) ... [2022-11-20 20:56:28,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4650ef52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:28, skipping insertion in model container [2022-11-20 20:56:28,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:28" (1/1) ... [2022-11-20 20:56:28,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:56:28,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:56:29,111 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_7b9c6162-f662-4cde-8d75-e2fcbc24c023/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-20 20:56:29,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:29,159 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:56:29,198 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_7b9c6162-f662-4cde-8d75-e2fcbc24c023/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-20 20:56:29,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:29,279 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:56:29,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29 WrapperNode [2022-11-20 20:56:29,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:29,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:29,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:56:29,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:56:29,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,387 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-20 20:56:29,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:29,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:56:29,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:56:29,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:56:29,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:56:29,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:56:29,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:56:29,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:56:29,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (1/1) ... [2022-11-20 20:56:29,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:29,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:56:29,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9c6162-f662-4cde-8d75-e2fcbc24c023/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:56:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:56:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:56:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 20:56:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:56:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:56:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 20:56:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 20:56:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:56:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:56:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:56:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:56:29,588 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:56:29,744 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:56:29,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:56:30,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:56:30,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:56:30,305 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 20:56:30,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:30 BoogieIcfgContainer [2022-11-20 20:56:30,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:56:30,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:56:30,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:56:30,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:56:30,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:56:28" (1/3) ... [2022-11-20 20:56:30,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a9cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:30, skipping insertion in model container [2022-11-20 20:56:30,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:29" (2/3) ... [2022-11-20 20:56:30,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a9cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:30, skipping insertion in model container [2022-11-20 20:56:30,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:30" (3/3) ... [2022-11-20 20:56:30,354 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-11-20 20:56:30,365 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 20:56:30,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:56:30,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 20:56:30,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:56:30,514 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 20:56:30,564 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:56:30,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 160 transitions, 328 flow [2022-11-20 20:56:30,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 160 transitions, 328 flow [2022-11-20 20:56:30,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 328 flow [2022-11-20 20:56:30,707 INFO L130 PetriNetUnfolder]: 17/209 cut-off events. [2022-11-20 20:56:30,708 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 20:56:30,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 17/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 620 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-11-20 20:56:30,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 6710 [2022-11-20 20:56:38,071 INFO L134 LiptonReduction]: Checked pairs total: 49258 [2022-11-20 20:56:38,071 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-20 20:56:38,082 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 67 transitions, 142 flow [2022-11-20 20:56:38,159 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:38,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:56:38,191 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;@e89d2cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:56:38,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 20:56:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:56:38,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:38,206 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-20 20:56:38,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 20:56:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 7388368, now seen corresponding path program 1 times [2022-11-20 20:56:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:38,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778850853] [2022-11-20 20:56:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:56:38,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:56:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:56:38,481 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:56:38,485 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:56:38,487 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-20 20:56:38,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-20 20:56:38,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-20 20:56:38,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-20 20:56:38,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-20 20:56:38,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-20 20:56:38,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-20 20:56:38,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-20 20:56:38,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-20 20:56:38,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-20 20:56:38,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-20 20:56:38,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:56:38,498 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:56:38,504 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 20:56:38,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 20:56:38,562 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 20:56:38,569 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:56:38,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 223 transitions, 464 flow [2022-11-20 20:56:38,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 223 transitions, 464 flow [2022-11-20 20:56:38,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 223 transitions, 464 flow [2022-11-20 20:56:38,757 INFO L130 PetriNetUnfolder]: 31/352 cut-off events. [2022-11-20 20:56:38,758 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 20:56:38,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 352 events. 31/352 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1355 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-11-20 20:56:38,785 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2022-11-20 20:56:47,237 INFO L134 LiptonReduction]: Checked pairs total: 205808 [2022-11-20 20:56:47,237 INFO L136 LiptonReduction]: Total number of compositions: 187 [2022-11-20 20:56:47,239 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 114 transitions, 246 flow [2022-11-20 20:56:48,742 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:48,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:56:48,745 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;@e89d2cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:56:48,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 20:56:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:56:48,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:48,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:48,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 20:56:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1021447031, now seen corresponding path program 1 times [2022-11-20 20:56:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:48,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948872545] [2022-11-20 20:56:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:56:49,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948872545] [2022-11-20 20:56:49,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948872545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:49,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:49,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:56:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326377894] [2022-11-20 20:56:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:49,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:49,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:49,316 INFO L87 Difference]: Start difference. First operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:50,095 INFO L93 Difference]: Finished difference Result 32413 states and 92894 transitions. [2022-11-20 20:56:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-20 20:56:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:50,518 INFO L225 Difference]: With dead ends: 32413 [2022-11-20 20:56:50,518 INFO L226 Difference]: Without dead ends: 32397 [2022-11-20 20:56:50,519 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 [2022-11-20 20:56:50,523 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:50,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 122 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32397 states. [2022-11-20 20:56:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32397 to 32397. [2022-11-20 20:56:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32397 states, 32250 states have (on average 2.8791937984496125) internal successors, (92854), 32396 states have internal predecessors, (92854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32397 states to 32397 states and 92854 transitions. [2022-11-20 20:56:52,607 INFO L78 Accepts]: Start accepts. Automaton has 32397 states and 92854 transitions. Word has length 9 [2022-11-20 20:56:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:52,608 INFO L495 AbstractCegarLoop]: Abstraction has 32397 states and 92854 transitions. [2022-11-20 20:56:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:56:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32397 states and 92854 transitions. [2022-11-20 20:56:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:56:52,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:52,613 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 20:56:52,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:56:52,614 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 12 more)] === [2022-11-20 20:56:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -864799163, now seen corresponding path program 1 times [2022-11-20 20:56:52,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227620371] [2022-11-20 20:56:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:52,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:56:52,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:56:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:56:52,711 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:56:52,721 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:56:52,722 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-20 20:56:52,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-20 20:56:52,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-20 20:56:52,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-20 20:56:52,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-20 20:56:52,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-20 20:56:52,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-20 20:56:52,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-20 20:56:52,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-20 20:56:52,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-20 20:56:52,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-20 20:56:52,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-20 20:56:52,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-20 20:56:52,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-20 20:56:52,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-20 20:56:52,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:56:52,729 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:56:52,730 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 20:56:52,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 20:56:52,779 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 20:56:52,784 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:56:52,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 286 transitions, 602 flow [2022-11-20 20:56:52,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 286 transitions, 602 flow [2022-11-20 20:56:52,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 286 transitions, 602 flow [2022-11-20 20:56:53,064 INFO L130 PetriNetUnfolder]: 50/540 cut-off events. [2022-11-20 20:56:53,065 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 20:56:53,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 540 events. 50/540 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2345 event pairs, 1 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 360. Up to 16 conditions per place. [2022-11-20 20:56:53,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 45018 [2022-11-20 20:57:05,976 INFO L134 LiptonReduction]: Checked pairs total: 474491 [2022-11-20 20:57:05,979 INFO L136 LiptonReduction]: Total number of compositions: 239 [2022-11-20 20:57:05,990 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 157 transitions, 344 flow