./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:02:45,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:02:45,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:02:45,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:02:45,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:02:45,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:02:45,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:02:45,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:02:45,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:02:45,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:02:45,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:02:45,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:02:45,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:02:45,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:02:45,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:02:45,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:02:45,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:02:45,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:02:45,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:02:45,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:02:45,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:02:45,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:02:45,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:02:45,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:02:45,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:02:45,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:02:45,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:02:45,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:02:45,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:02:45,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:02:45,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:02:45,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:02:45,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:02:45,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:02:45,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:02:45,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:02:45,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:02:45,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:02:45,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:02:45,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:02:45,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:02:45,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:02:45,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:02:45,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:02:45,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:02:45,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:02:45,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:02:45,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:02:45,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:02:45,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:02:45,740 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:02:45,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:02:45,741 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:02:45,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:02:45,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:02:45,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:02:45,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:02:45,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:02:45,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:02:45,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:02:45,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:02:45,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:02:45,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:02:45,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:02:45,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:02:45,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:02:45,746 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:02:45,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:02:45,746 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-11-25 18:02:46,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:02:46,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:02:46,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:02:46,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:02:46,150 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:02:46,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-25 18:02:49,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:02:49,637 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:02:49,637 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-25 18:02:49,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/data/28760edac/970a6d6058f54c94ae2216258bd0d58a/FLAGdaabf9e7e [2022-11-25 18:02:49,698 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/data/28760edac/970a6d6058f54c94ae2216258bd0d58a [2022-11-25 18:02:49,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:02:49,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:02:49,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:02:49,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:02:49,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:02:49,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:49,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db5ea81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49, skipping insertion in model container [2022-11-25 18:02:49,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:49,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:02:49,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:02:50,258 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_e50d0bfa-521d-4edd-946a-4eedd888344d/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-25 18:02:50,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:02:50,321 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:02:50,355 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_e50d0bfa-521d-4edd-946a-4eedd888344d/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-25 18:02:50,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:02:50,407 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:02:50,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50 WrapperNode [2022-11-25 18:02:50,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:02:50,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:02:50,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:02:50,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:02:50,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,464 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-25 18:02:50,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:02:50,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:02:50,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:02:50,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:02:50,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:02:50,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:02:50,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:02:50,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:02:50,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (1/1) ... [2022-11-25 18:02:50,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:02:50,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:02:50,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:02:50,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50d0bfa-521d-4edd-946a-4eedd888344d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:02:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:02:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:02:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:02:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:02:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:02:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 18:02:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 18:02:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:02:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:02:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:02:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:02:50,620 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:02:50,872 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:02:50,874 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:02:51,285 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:02:51,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:02:51,295 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-25 18:02:51,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:51 BoogieIcfgContainer [2022-11-25 18:02:51,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:02:51,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:02:51,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:02:51,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:02:51,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:02:49" (1/3) ... [2022-11-25 18:02:51,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aaf849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:51, skipping insertion in model container [2022-11-25 18:02:51,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:50" (2/3) ... [2022-11-25 18:02:51,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aaf849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:51, skipping insertion in model container [2022-11-25 18:02:51,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:51" (3/3) ... [2022-11-25 18:02:51,321 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-11-25 18:02:51,331 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:02:51,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:02:51,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 18:02:51,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:02:51,459 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 18:02:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,621 INFO L130 PetriNetUnfolder]: 17/211 cut-off events. [2022-11-25 18:02:51,622 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:02:51,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 17/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 623 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-11-25 18:02:51,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,637 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:02:51,652 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 332 flow [2022-11-25 18:02:51,703 INFO L130 PetriNetUnfolder]: 17/211 cut-off events. [2022-11-25 18:02:51,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:02:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 17/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 623 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-11-25 18:02:51,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 6710 [2022-11-25 18:02:57,400 INFO L134 LiptonReduction]: Checked pairs total: 49005 [2022-11-25 18:02:57,400 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-25 18:02:57,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:02:57,425 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a9ddcd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:02:57,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 18:02:57,431 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2022-11-25 18:02:57,432 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:02:57,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:02:57,433 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:02:57,433 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)] === [2022-11-25 18:02:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:02:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 179283403, now seen corresponding path program 1 times [2022-11-25 18:02:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:02:57,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648301438] [2022-11-25 18:02:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:02:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:02:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:02:57,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:02:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:02:57,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:02:57,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:02:57,633 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-25 18:02:57,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-25 18:02:57,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-25 18:02:57,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-25 18:02:57,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-25 18:02:57,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-25 18:02:57,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-25 18:02:57,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-25 18:02:57,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-25 18:02:57,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-25 18:02:57,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-25 18:02:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:02:57,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:02:57,642 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:02:57,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:02:57,679 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:02:57,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,769 INFO L130 PetriNetUnfolder]: 31/354 cut-off events. [2022-11-25 18:02:57,769 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:02:57,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 354 events. 31/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1356 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-25 18:02:57,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,783 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:02:57,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 468 flow [2022-11-25 18:02:57,855 INFO L130 PetriNetUnfolder]: 31/354 cut-off events. [2022-11-25 18:02:57,856 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:02:57,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 354 events. 31/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1356 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-25 18:02:57,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2022-11-25 18:03:04,172 INFO L134 LiptonReduction]: Checked pairs total: 205839 [2022-11-25 18:03:04,173 INFO L136 LiptonReduction]: Total number of compositions: 189 [2022-11-25 18:03:04,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:03:04,183 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a9ddcd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:03:04,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 18:03:04,189 INFO L130 PetriNetUnfolder]: 6/45 cut-off events. [2022-11-25 18:03:04,190 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:03:04,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:04,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:04,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-25 18:03:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2070586275, now seen corresponding path program 1 times [2022-11-25 18:03:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528785316] [2022-11-25 18:03:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528785316] [2022-11-25 18:03:04,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528785316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:04,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:04,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:04,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146404780] [2022-11-25 18:03:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:04,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:04,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:04,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 414 [2022-11-25 18:03:04,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:04,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:04,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 414 [2022-11-25 18:03:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:05,842 INFO L130 PetriNetUnfolder]: 3146/8037 cut-off events. [2022-11-25 18:03:05,843 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-25 18:03:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 8037 events. 3146/8037 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 70541 event pairs, 2981 based on Foata normal form. 691/8155 useless extension candidates. Maximal degree in co-relation 9353. Up to 5023 conditions per place. [2022-11-25 18:03:05,893 INFO L137 encePairwiseOnDemand]: 397/414 looper letters, 51 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2022-11-25 18:03:05,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 114 transitions, 352 flow [2022-11-25 18:03:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2022-11-25 18:03:05,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5402576489533011 [2022-11-25 18:03:05,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2022-11-25 18:03:05,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2022-11-25 18:03:05,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:05,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2022-11-25 18:03:05,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:05,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:05,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:05,928 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 246 flow. Second operand 3 states and 671 transitions. [2022-11-25 18:03:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 114 transitions, 352 flow [2022-11-25 18:03:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:05,935 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 230 flow [2022-11-25 18:03:05,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2022-11-25 18:03:05,941 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 3 predicate places. [2022-11-25 18:03:05,941 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 230 flow [2022-11-25 18:03:05,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:05,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:05,942 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 18:03:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:03:05,942 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)] === [2022-11-25 18:03:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -982819703, now seen corresponding path program 1 times [2022-11-25 18:03:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:05,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778937792] [2022-11-25 18:03:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:03:05,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:03:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:03:06,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:03:06,023 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:03:06,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-25 18:03:06,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-25 18:03:06,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-25 18:03:06,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-25 18:03:06,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-25 18:03:06,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-25 18:03:06,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-25 18:03:06,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-25 18:03:06,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-25 18:03:06,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-25 18:03:06,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-25 18:03:06,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-25 18:03:06,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-25 18:03:06,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-25 18:03:06,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-25 18:03:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:03:06,027 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:03:06,028 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:03:06,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:03:06,064 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:03:06,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,169 INFO L130 PetriNetUnfolder]: 50/542 cut-off events. [2022-11-25 18:03:06,169 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:03:06,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 542 events. 50/542 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2339 event pairs, 1 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 362. Up to 16 conditions per place. [2022-11-25 18:03:06,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,183 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:03:06,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 288 transitions, 606 flow [2022-11-25 18:03:06,312 INFO L130 PetriNetUnfolder]: 50/542 cut-off events. [2022-11-25 18:03:06,312 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:03:06,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 542 events. 50/542 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2339 event pairs, 1 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 362. Up to 16 conditions per place. [2022-11-25 18:03:06,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 45018 [2022-11-25 18:03:16,758 INFO L134 LiptonReduction]: Checked pairs total: 475206 [2022-11-25 18:03:16,758 INFO L136 LiptonReduction]: Total number of compositions: 241 [2022-11-25 18:03:16,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:03:16,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a9ddcd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:03:16,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-25 18:03:16,769 INFO L130 PetriNetUnfolder]: 6/45 cut-off events. [2022-11-25 18:03:16,769 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:03:16,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:16,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:16,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:03:16,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash -180187776, now seen corresponding path program 1 times [2022-11-25 18:03:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:16,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376982902] [2022-11-25 18:03:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:16,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:16,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376982902] [2022-11-25 18:03:16,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376982902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:16,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:16,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808757200] [2022-11-25 18:03:16,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:16,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 529 [2022-11-25 18:03:16,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 157 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:16,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:16,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 529 [2022-11-25 18:03:16,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:32,118 INFO L130 PetriNetUnfolder]: 65023/129201 cut-off events. [2022-11-25 18:03:32,118 INFO L131 PetriNetUnfolder]: For 2286/2286 co-relation queries the response was YES. [2022-11-25 18:03:32,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221202 conditions, 129201 events. 65023/129201 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 2701. Compared 1452081 event pairs, 42073 based on Foata normal form. 11159/130944 useless extension candidates. Maximal degree in co-relation 13354. Up to 90443 conditions per place. [2022-11-25 18:03:33,037 INFO L137 encePairwiseOnDemand]: 506/529 looper letters, 65 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2022-11-25 18:03:33,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 466 flow [2022-11-25 18:03:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 856 transitions. [2022-11-25 18:03:33,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5393824826717076 [2022-11-25 18:03:33,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 856 transitions. [2022-11-25 18:03:33,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 856 transitions. [2022-11-25 18:03:33,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:33,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 856 transitions. [2022-11-25 18:03:33,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:33,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 529.0) internal successors, (2116), 4 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:33,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 529.0) internal successors, (2116), 4 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:33,055 INFO L175 Difference]: Start difference. First operand has 141 places, 157 transitions, 344 flow. Second operand 3 states and 856 transitions. [2022-11-25 18:03:33,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 466 flow [2022-11-25 18:03:33,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 151 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:33,069 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 316 flow [2022-11-25 18:03:33,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=529, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2022-11-25 18:03:33,071 INFO L288 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2022-11-25 18:03:33,072 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 316 flow [2022-11-25 18:03:33,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:33,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:33,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:33,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:03:33,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-25 18:03:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash 188193907, now seen corresponding path program 1 times [2022-11-25 18:03:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:33,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871892653] [2022-11-25 18:03:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:33,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:33,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:33,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871892653] [2022-11-25 18:03:33,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871892653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:33,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:33,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:03:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688478245] [2022-11-25 18:03:33,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:03:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:03:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:03:34,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 529 [2022-11-25 18:03:34,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:03:34,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:34,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 529 [2022-11-25 18:03:34,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand