./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a --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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- 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-b5237d8 [2022-11-21 17:30:45,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:30:45,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:30:45,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:30:45,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:30:45,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:30:45,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:30:45,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:30:45,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:30:45,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:30:45,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:30:45,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:30:45,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:30:45,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:30:45,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:30:45,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:30:45,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:30:45,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:30:45,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:30:45,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:30:45,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:30:45,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:30:45,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:30:45,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:30:45,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:30:45,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:30:45,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:30:45,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:30:45,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:30:45,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:30:45,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:30:45,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:30:45,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:30:45,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:30:45,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:30:45,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:30:45,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:30:45,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:30:45,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:30:45,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:30:45,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:30:45,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 17:30:45,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:30:45,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:30:45,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:30:45,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:30:45,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:30:45,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:30:45,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:30:45,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:30:45,950 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:30:45,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:30:45,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:30:45,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:30:45,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:30:45,953 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 17:30:45,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:30:45,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:30:45,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:30:45,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:30:45,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:30:45,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:30:45,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:30:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:30:45,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:30:45,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:30:45,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:30:45,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:30:45,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:30:45,956 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:30:45,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:30:45,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:30:45,957 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_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-11-21 17:30:46,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:30:46,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:30:46,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:30:46,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:30:46,346 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:30:46,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-21 17:30:49,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:30:49,811 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:30:49,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-11-21 17:30:49,826 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/data/cee1c3a83/51f5158146ad4e43a98b7c1f0b741646/FLAG6fcfb36d5 [2022-11-21 17:30:49,841 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/data/cee1c3a83/51f5158146ad4e43a98b7c1f0b741646 [2022-11-21 17:30:49,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:30:49,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:30:49,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:30:49,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:30:49,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:30:49,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:30:49" (1/1) ... [2022-11-21 17:30:49,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad3191b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:49, skipping insertion in model container [2022-11-21 17:30:49,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:30:49" (1/1) ... [2022-11-21 17:30:49,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:30:49,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:30:50,306 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_724eafed-c516-4c15-acef-d5ded823093b/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-21 17:30:50,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:30:50,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:30:50,421 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_724eafed-c516-4c15-acef-d5ded823093b/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-11-21 17:30:50,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:30:50,479 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:30:50,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50 WrapperNode [2022-11-21 17:30:50,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:30:50,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:30:50,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:30:50,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:30:50,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,565 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-11-21 17:30:50,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:30:50,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:30:50,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:30:50,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:30:50,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:30:50,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:30:50,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:30:50,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:30:50,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (1/1) ... [2022-11-21 17:30:50,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:30:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:30:50,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:30:50,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:30:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:30:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:30:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:30:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:30:50,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:30:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 17:30:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 17:30:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:30:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:30:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:30:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:30:50,702 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:30:50,878 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:30:50,881 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:30:51,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:30:51,306 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:30:51,312 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 17:30:51,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:30:51 BoogieIcfgContainer [2022-11-21 17:30:51,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:30:51,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:30:51,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:30:51,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:30:51,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:30:49" (1/3) ... [2022-11-21 17:30:51,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a5d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:30:51, skipping insertion in model container [2022-11-21 17:30:51,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:30:50" (2/3) ... [2022-11-21 17:30:51,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a5d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:30:51, skipping insertion in model container [2022-11-21 17:30:51,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:30:51" (3/3) ... [2022-11-21 17:30:51,330 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-11-21 17:30:51,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:30:51,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:30:51,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 17:30:51,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:30:51,493 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 17:30:51,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 364 flow [2022-11-21 17:30:51,655 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2022-11-21 17:30:51,656 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:30:51,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 230 events. 17/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 687 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2022-11-21 17:30:51,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 364 flow [2022-11-21 17:30:51,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 364 flow [2022-11-21 17:30:51,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:30:51,703 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;@29a8b685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:30:51,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 17:30:51,711 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-21 17:30:51,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:30:51,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:51,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:51,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash -621177877, now seen corresponding path program 1 times [2022-11-21 17:30:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100293227] [2022-11-21 17:30:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:51,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100293227] [2022-11-21 17:30:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100293227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:51,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:51,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320466853] [2022-11-21 17:30:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:51,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:52,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:52,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-11-21 17:30:52,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-21 17:30:52,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:52,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-11-21 17:30:52,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:52,134 INFO L130 PetriNetUnfolder]: 1/211 cut-off events. [2022-11-21 17:30:52,134 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-21 17:30:52,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 211 events. 1/211 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 351 event pairs, 0 based on Foata normal form. 22/213 useless extension candidates. Maximal degree in co-relation 4. Up to 15 conditions per place. [2022-11-21 17:30:52,137 INFO L137 encePairwiseOnDemand]: 164/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-11-21 17:30:52,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 364 flow [2022-11-21 17:30:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-21 17:30:52,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-11-21 17:30:52,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-21 17:30:52,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-21 17:30:52,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:52,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-21 17:30:52,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2022-11-21 17:30:52,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,182 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 364 flow. Second operand 3 states and 481 transitions. [2022-11-21 17:30:52,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 364 flow [2022-11-21 17:30:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:30:52,196 INFO L231 Difference]: Finished difference. Result has 169 places, 165 transitions, 342 flow [2022-11-21 17:30:52,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2022-11-21 17:30:52,204 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-21 17:30:52,205 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 342 flow [2022-11-21 17:30:52,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-21 17:30:52,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:52,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:52,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:30:52,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:52,211 INFO L85 PathProgramCache]: Analyzing trace with hash 48527258, now seen corresponding path program 1 times [2022-11-21 17:30:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986462385] [2022-11-21 17:30:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:52,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:52,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986462385] [2022-11-21 17:30:52,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986462385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:52,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:52,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:52,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354125413] [2022-11-21 17:30:52,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:52,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-11-21 17:30:52,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-11-21 17:30:52,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:52,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-11-21 17:30:52,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:52,449 INFO L130 PetriNetUnfolder]: 1/208 cut-off events. [2022-11-21 17:30:52,450 INFO L131 PetriNetUnfolder]: For 5/8 co-relation queries the response was YES. [2022-11-21 17:30:52,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 208 events. 1/208 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 183. Up to 8 conditions per place. [2022-11-21 17:30:52,451 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-11-21 17:30:52,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 354 flow [2022-11-21 17:30:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-21 17:30:52,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-11-21 17:30:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:52,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-21 17:30:52,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,460 INFO L175 Difference]: Start difference. First operand has 169 places, 165 transitions, 342 flow. Second operand 3 states and 475 transitions. [2022-11-21 17:30:52,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 354 flow [2022-11-21 17:30:52,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:30:52,465 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 336 flow [2022-11-21 17:30:52,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-11-21 17:30:52,467 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-21 17:30:52,467 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 336 flow [2022-11-21 17:30:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-11-21 17:30:52,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:52,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:52,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:30:52,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:52,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2030100948, now seen corresponding path program 1 times [2022-11-21 17:30:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804976924] [2022-11-21 17:30:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:52,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:52,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804976924] [2022-11-21 17:30:52,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804976924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:52,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:52,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555843897] [2022-11-21 17:30:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:52,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-11-21 17:30:52,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-21 17:30:52,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:52,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-11-21 17:30:52,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:52,599 INFO L130 PetriNetUnfolder]: 1/207 cut-off events. [2022-11-21 17:30:52,600 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-21 17:30:52,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 207 events. 1/207 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 341 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 187. Up to 12 conditions per place. [2022-11-21 17:30:52,601 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-11-21 17:30:52,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 360 flow [2022-11-21 17:30:52,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-21 17:30:52,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8801498127340824 [2022-11-21 17:30:52,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-21 17:30:52,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-21 17:30:52,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:52,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-21 17:30:52,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2022-11-21 17:30:52,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,608 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 336 flow. Second operand 3 states and 470 transitions. [2022-11-21 17:30:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 360 flow [2022-11-21 17:30:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:30:52,613 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 337 flow [2022-11-21 17:30:52,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-11-21 17:30:52,614 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-21 17:30:52,614 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 337 flow [2022-11-21 17:30:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-21 17:30:52,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:52,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:30:52,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -176435115, now seen corresponding path program 1 times [2022-11-21 17:30:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:52,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821922623] [2022-11-21 17:30:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:52,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821922623] [2022-11-21 17:30:52,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821922623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:52,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:52,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450007890] [2022-11-21 17:30:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:52,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-11-21 17:30:52,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2022-11-21 17:30:52,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:52,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-11-21 17:30:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:52,833 INFO L130 PetriNetUnfolder]: 0/220 cut-off events. [2022-11-21 17:30:52,833 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 17:30:52,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 220 events. 0/220 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 343 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-11-21 17:30:52,834 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2022-11-21 17:30:52,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 160 transitions, 349 flow [2022-11-21 17:30:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-21 17:30:52,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-11-21 17:30:52,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:52,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-21 17:30:52,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-21 17:30:52,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,845 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 337 flow. Second operand 3 states and 475 transitions. [2022-11-21 17:30:52,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 160 transitions, 349 flow [2022-11-21 17:30:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:30:52,849 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 331 flow [2022-11-21 17:30:52,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2022-11-21 17:30:52,853 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -4 predicate places. [2022-11-21 17:30:52,853 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 331 flow [2022-11-21 17:30:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2022-11-21 17:30:52,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:52,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:30:52,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash 613365282, now seen corresponding path program 1 times [2022-11-21 17:30:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141299441] [2022-11-21 17:30:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:52,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141299441] [2022-11-21 17:30:52,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141299441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:52,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:52,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:30:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788092027] [2022-11-21 17:30:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:52,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:52,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 178 [2022-11-21 17:30:52,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2022-11-21 17:30:52,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:52,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 178 [2022-11-21 17:30:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:52,988 INFO L130 PetriNetUnfolder]: 0/179 cut-off events. [2022-11-21 17:30:52,988 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-21 17:30:52,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 179 events. 0/179 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 151 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-21 17:30:52,989 INFO L137 encePairwiseOnDemand]: 175/178 looper letters, 9 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-11-21 17:30:52,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 357 flow [2022-11-21 17:30:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-11-21 17:30:52,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044943820224719 [2022-11-21 17:30:52,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-11-21 17:30:52,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-11-21 17:30:52,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:52,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-11-21 17:30:52,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2022-11-21 17:30:52,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2022-11-21 17:30:52,995 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 331 flow. Second operand 3 states and 483 transitions. [2022-11-21 17:30:52,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 357 flow [2022-11-21 17:30:52,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:30:52,999 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 338 flow [2022-11-21 17:30:52,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2022-11-21 17:30:53,000 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-11-21 17:30:53,000 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 338 flow [2022-11-21 17:30:53,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2022-11-21 17:30:53,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:53,001 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:30:53,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-21 17:30:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash 961455302, now seen corresponding path program 1 times [2022-11-21 17:30:53,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:53,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125136340] [2022-11-21 17:30:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:30:53,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:30:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:30:53,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:30:53,066 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:30:53,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-21 17:30:53,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-21 17:30:53,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-21 17:30:53,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-21 17:30:53,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-21 17:30:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-21 17:30:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-21 17:30:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-21 17:30:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-21 17:30:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-21 17:30:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-21 17:30:53,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-21 17:30:53,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-21 17:30:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-21 17:30:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-21 17:30:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-21 17:30:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-21 17:30:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-21 17:30:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-21 17:30:53,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:30:53,083 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-21 17:30:53,086 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:30:53,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 17:30:53,159 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:30:53,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 246 transitions, 510 flow [2022-11-21 17:30:53,267 INFO L130 PetriNetUnfolder]: 31/381 cut-off events. [2022-11-21 17:30:53,267 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 17:30:53,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 381 events. 31/381 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1480 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-21 17:30:53,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 246 transitions, 510 flow [2022-11-21 17:30:53,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 246 transitions, 510 flow [2022-11-21 17:30:53,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:30:53,291 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;@29a8b685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:30:53,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-21 17:30:53,294 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-21 17:30:53,295 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:30:53,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:53,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:53,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -949591519, now seen corresponding path program 1 times [2022-11-21 17:30:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5600223] [2022-11-21 17:30:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:53,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5600223] [2022-11-21 17:30:53,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5600223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:53,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:53,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124225957] [2022-11-21 17:30:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:53,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 246 [2022-11-21 17:30:53,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-11-21 17:30:53,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:53,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 246 [2022-11-21 17:30:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:53,476 INFO L130 PetriNetUnfolder]: 3/349 cut-off events. [2022-11-21 17:30:53,477 INFO L131 PetriNetUnfolder]: For 28/66 co-relation queries the response was YES. [2022-11-21 17:30:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 349 events. 3/349 cut-off events. For 28/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 965 event pairs, 0 based on Foata normal form. 60/374 useless extension candidates. Maximal degree in co-relation 229. Up to 22 conditions per place. [2022-11-21 17:30:53,480 INFO L137 encePairwiseOnDemand]: 226/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/227 dead transitions. [2022-11-21 17:30:53,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 227 transitions, 502 flow [2022-11-21 17:30:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2022-11-21 17:30:53,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-11-21 17:30:53,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2022-11-21 17:30:53,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2022-11-21 17:30:53,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:53,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2022-11-21 17:30:53,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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) [2022-11-21 17:30:53,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:53,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:53,488 INFO L175 Difference]: Start difference. First operand has 232 places, 246 transitions, 510 flow. Second operand 3 states and 669 transitions. [2022-11-21 17:30:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 227 transitions, 502 flow [2022-11-21 17:30:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 227 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:30:53,493 INFO L231 Difference]: Finished difference. Result has 232 places, 227 transitions, 476 flow [2022-11-21 17:30:53,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=232, PETRI_TRANSITIONS=227} [2022-11-21 17:30:53,496 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 0 predicate places. [2022-11-21 17:30:53,496 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 227 transitions, 476 flow [2022-11-21 17:30:53,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-11-21 17:30:53,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:53,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:53,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:30:53,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2024362224, now seen corresponding path program 1 times [2022-11-21 17:30:53,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316312361] [2022-11-21 17:30:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316312361] [2022-11-21 17:30:53,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316312361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:53,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:53,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132685739] [2022-11-21 17:30:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:53,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 246 [2022-11-21 17:30:53,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 227 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2022-11-21 17:30:53,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:53,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 246 [2022-11-21 17:30:53,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:53,658 INFO L130 PetriNetUnfolder]: 3/345 cut-off events. [2022-11-21 17:30:53,658 INFO L131 PetriNetUnfolder]: For 26/54 co-relation queries the response was YES. [2022-11-21 17:30:53,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 345 events. 3/345 cut-off events. For 26/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 956 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 333. Up to 14 conditions per place. [2022-11-21 17:30:53,661 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 9 selfloop transitions, 1 changer transitions 0/225 dead transitions. [2022-11-21 17:30:53,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 492 flow [2022-11-21 17:30:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2022-11-21 17:30:53,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8902439024390244 [2022-11-21 17:30:53,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2022-11-21 17:30:53,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2022-11-21 17:30:53,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:53,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2022-11-21 17:30:53,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 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) [2022-11-21 17:30:53,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:53,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:53,669 INFO L175 Difference]: Start difference. First operand has 232 places, 227 transitions, 476 flow. Second operand 3 states and 657 transitions. [2022-11-21 17:30:53,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 492 flow [2022-11-21 17:30:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 225 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:30:53,676 INFO L231 Difference]: Finished difference. Result has 230 places, 225 transitions, 470 flow [2022-11-21 17:30:53,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2022-11-21 17:30:53,678 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-21 17:30:53,678 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 470 flow [2022-11-21 17:30:53,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2022-11-21 17:30:53,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:53,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:53,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:30:53,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1871693790, now seen corresponding path program 1 times [2022-11-21 17:30:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:53,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498254321] [2022-11-21 17:30:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:53,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:53,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498254321] [2022-11-21 17:30:53,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498254321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:53,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:53,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:53,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291532895] [2022-11-21 17:30:53,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:53,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:53,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:53,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 246 [2022-11-21 17:30:53,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2022-11-21 17:30:53,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:53,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 246 [2022-11-21 17:30:53,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:54,029 INFO L130 PetriNetUnfolder]: 58/1081 cut-off events. [2022-11-21 17:30:54,029 INFO L131 PetriNetUnfolder]: For 102/116 co-relation queries the response was YES. [2022-11-21 17:30:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1081 events. 58/1081 cut-off events. For 102/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6131 event pairs, 54 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 1218. Up to 131 conditions per place. [2022-11-21 17:30:54,042 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 19 selfloop transitions, 2 changer transitions 0/224 dead transitions. [2022-11-21 17:30:54,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 510 flow [2022-11-21 17:30:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-11-21 17:30:54,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672086720867209 [2022-11-21 17:30:54,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-11-21 17:30:54,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-11-21 17:30:54,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:54,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-11-21 17:30:54,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2022-11-21 17:30:54,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,049 INFO L175 Difference]: Start difference. First operand has 230 places, 225 transitions, 470 flow. Second operand 3 states and 640 transitions. [2022-11-21 17:30:54,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 510 flow [2022-11-21 17:30:54,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 224 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:30:54,054 INFO L231 Difference]: Finished difference. Result has 230 places, 224 transitions, 471 flow [2022-11-21 17:30:54,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=230, PETRI_TRANSITIONS=224} [2022-11-21 17:30:54,055 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-21 17:30:54,055 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 224 transitions, 471 flow [2022-11-21 17:30:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2022-11-21 17:30:54,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:54,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:30:54,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 512543319, now seen corresponding path program 1 times [2022-11-21 17:30:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:54,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190051295] [2022-11-21 17:30:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:54,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190051295] [2022-11-21 17:30:54,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190051295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:54,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:54,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:30:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129327446] [2022-11-21 17:30:54,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:54,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:54,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 246 [2022-11-21 17:30:54,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 224 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2022-11-21 17:30:54,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:54,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 246 [2022-11-21 17:30:54,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:54,330 INFO L130 PetriNetUnfolder]: 30/900 cut-off events. [2022-11-21 17:30:54,331 INFO L131 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-11-21 17:30:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 900 events. 30/900 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4537 event pairs, 19 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 971. Up to 69 conditions per place. [2022-11-21 17:30:54,340 INFO L137 encePairwiseOnDemand]: 240/246 looper letters, 15 selfloop transitions, 2 changer transitions 0/223 dead transitions. [2022-11-21 17:30:54,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 223 transitions, 508 flow [2022-11-21 17:30:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-11-21 17:30:54,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-11-21 17:30:54,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-11-21 17:30:54,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-11-21 17:30:54,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:54,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-11-21 17:30:54,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2022-11-21 17:30:54,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,347 INFO L175 Difference]: Start difference. First operand has 230 places, 224 transitions, 471 flow. Second operand 3 states and 648 transitions. [2022-11-21 17:30:54,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 223 transitions, 508 flow [2022-11-21 17:30:54,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 223 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:30:54,352 INFO L231 Difference]: Finished difference. Result has 227 places, 222 transitions, 473 flow [2022-11-21 17:30:54,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=227, PETRI_TRANSITIONS=222} [2022-11-21 17:30:54,353 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -5 predicate places. [2022-11-21 17:30:54,353 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 222 transitions, 473 flow [2022-11-21 17:30:54,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2022-11-21 17:30:54,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:54,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:54,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:30:54,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash 335253986, now seen corresponding path program 1 times [2022-11-21 17:30:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935161761] [2022-11-21 17:30:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:54,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:54,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935161761] [2022-11-21 17:30:54,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935161761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:54,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:54,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:30:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674080429] [2022-11-21 17:30:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:30:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:30:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:30:54,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 246 [2022-11-21 17:30:54,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 222 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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) [2022-11-21 17:30:54,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:54,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 246 [2022-11-21 17:30:54,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:30:54,525 INFO L130 PetriNetUnfolder]: 3/403 cut-off events. [2022-11-21 17:30:54,526 INFO L131 PetriNetUnfolder]: For 43/112 co-relation queries the response was YES. [2022-11-21 17:30:54,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 403 events. 3/403 cut-off events. For 43/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1240 event pairs, 0 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 407. Up to 18 conditions per place. [2022-11-21 17:30:54,529 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2022-11-21 17:30:54,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 511 flow [2022-11-21 17:30:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:30:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:30:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-21 17:30:54,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037940379403794 [2022-11-21 17:30:54,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-21 17:30:54,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-21 17:30:54,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:30:54,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-21 17:30:54,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2022-11-21 17:30:54,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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) [2022-11-21 17:30:54,536 INFO L175 Difference]: Start difference. First operand has 227 places, 222 transitions, 473 flow. Second operand 3 states and 667 transitions. [2022-11-21 17:30:54,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 511 flow [2022-11-21 17:30:54,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 226 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:30:54,541 INFO L231 Difference]: Finished difference. Result has 230 places, 223 transitions, 485 flow [2022-11-21 17:30:54,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=485, PETRI_PLACES=230, PETRI_TRANSITIONS=223} [2022-11-21 17:30:54,542 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-11-21 17:30:54,542 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 223 transitions, 485 flow [2022-11-21 17:30:54,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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) [2022-11-21 17:30:54,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:30:54,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:54,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:30:54,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:30:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2078860065, now seen corresponding path program 1 times [2022-11-21 17:30:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:54,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570113725] [2022-11-21 17:30:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:54,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570113725] [2022-11-21 17:30:54,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570113725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:54,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:54,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:30:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264368989] [2022-11-21 17:30:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:30:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:30:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:30:54,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 246 [2022-11-21 17:30:54,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 223 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 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) [2022-11-21 17:30:54,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:30:54,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 246 [2022-11-21 17:30:54,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:08,295 INFO L130 PetriNetUnfolder]: 40125/79221 cut-off events. [2022-11-21 17:31:08,296 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-11-21 17:31:08,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141948 conditions, 79221 events. 40125/79221 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 798213 event pairs, 11389 based on Foata normal form. 0/69269 useless extension candidates. Maximal degree in co-relation 141903. Up to 23722 conditions per place. [2022-11-21 17:31:08,884 INFO L137 encePairwiseOnDemand]: 202/246 looper letters, 270 selfloop transitions, 84 changer transitions 0/503 dead transitions. [2022-11-21 17:31:08,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 503 transitions, 1797 flow [2022-11-21 17:31:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:31:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:31:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1282 transitions. [2022-11-21 17:31:08,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685636856368564 [2022-11-21 17:31:08,888 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1282 transitions. [2022-11-21 17:31:08,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1282 transitions. [2022-11-21 17:31:08,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:08,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1282 transitions. [2022-11-21 17:31:08,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 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) [2022-11-21 17:31:08,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 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) [2022-11-21 17:31:08,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 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) [2022-11-21 17:31:08,901 INFO L175 Difference]: Start difference. First operand has 230 places, 223 transitions, 485 flow. Second operand 6 states and 1282 transitions. [2022-11-21 17:31:08,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 503 transitions, 1797 flow [2022-11-21 17:31:08,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 503 transitions, 1795 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:31:08,916 INFO L231 Difference]: Finished difference. Result has 239 places, 315 transitions, 1115 flow [2022-11-21 17:31:08,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1115, PETRI_PLACES=239, PETRI_TRANSITIONS=315} [2022-11-21 17:31:08,918 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, 7 predicate places. [2022-11-21 17:31:08,918 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 315 transitions, 1115 flow [2022-11-21 17:31:08,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 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) [2022-11-21 17:31:08,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:08,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:08,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:31:08,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:31:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1603064128, now seen corresponding path program 1 times [2022-11-21 17:31:08,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:08,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491557369] [2022-11-21 17:31:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491557369] [2022-11-21 17:31:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491557369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:31:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181436180] [2022-11-21 17:31:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:31:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:31:09,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:31:09,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:31:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:09,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:31:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:09,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:09,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181436180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:09,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:31:09,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-21 17:31:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195335399] [2022-11-21 17:31:09,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:09,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:31:09,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:31:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:31:09,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 246 [2022-11-21 17:31:09,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 315 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 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) [2022-11-21 17:31:09,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:09,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 246 [2022-11-21 17:31:09,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:10,107 INFO L130 PetriNetUnfolder]: 536/2861 cut-off events. [2022-11-21 17:31:10,107 INFO L131 PetriNetUnfolder]: For 452/531 co-relation queries the response was YES. [2022-11-21 17:31:10,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 2861 events. 536/2861 cut-off events. For 452/531 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22819 event pairs, 126 based on Foata normal form. 14/2809 useless extension candidates. Maximal degree in co-relation 5099. Up to 488 conditions per place. [2022-11-21 17:31:10,137 INFO L137 encePairwiseOnDemand]: 241/246 looper letters, 9 selfloop transitions, 7 changer transitions 0/274 dead transitions. [2022-11-21 17:31:10,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 274 transitions, 1057 flow [2022-11-21 17:31:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:31:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:31:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1962 transitions. [2022-11-21 17:31:10,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2022-11-21 17:31:10,144 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1962 transitions. [2022-11-21 17:31:10,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1962 transitions. [2022-11-21 17:31:10,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:10,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1962 transitions. [2022-11-21 17:31:10,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 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) [2022-11-21 17:31:10,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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) [2022-11-21 17:31:10,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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) [2022-11-21 17:31:10,159 INFO L175 Difference]: Start difference. First operand has 239 places, 315 transitions, 1115 flow. Second operand 9 states and 1962 transitions. [2022-11-21 17:31:10,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 274 transitions, 1057 flow [2022-11-21 17:31:10,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 17:31:10,171 INFO L231 Difference]: Finished difference. Result has 202 places, 270 transitions, 1029 flow [2022-11-21 17:31:10,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=202, PETRI_TRANSITIONS=270} [2022-11-21 17:31:10,173 INFO L288 CegarLoopForPetriNet]: 232 programPoint places, -30 predicate places. [2022-11-21 17:31:10,175 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 270 transitions, 1029 flow [2022-11-21 17:31:10,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 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) [2022-11-21 17:31:10,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:10,176 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:10,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:10,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724eafed-c516-4c15-acef-d5ded823093b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:31:10,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-21 17:31:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1557342231, now seen corresponding path program 1 times [2022-11-21 17:31:10,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:10,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583313850] [2022-11-21 17:31:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:31:10,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:31:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:31:10,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:31:10,443 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:31:10,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-21 17:31:10,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-21 17:31:10,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-21 17:31:10,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-21 17:31:10,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-21 17:31:10,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-21 17:31:10,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-21 17:31:10,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-21 17:31:10,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-21 17:31:10,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-21 17:31:10,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-21 17:31:10,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-21 17:31:10,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-21 17:31:10,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-21 17:31:10,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-21 17:31:10,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-21 17:31:10,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-21 17:31:10,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-21 17:31:10,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-21 17:31:10,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-21 17:31:10,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-21 17:31:10,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-21 17:31:10,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-21 17:31:10,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-21 17:31:10,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-21 17:31:10,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:31:10,449 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:10,450 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:31:10,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 17:31:10,503 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:31:10,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 314 transitions, 658 flow [2022-11-21 17:31:10,654 INFO L130 PetriNetUnfolder]: 50/577 cut-off events. [2022-11-21 17:31:10,654 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 17:31:10,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 577 events. 50/577 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2519 event pairs, 1 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 389. Up to 16 conditions per place. [2022-11-21 17:31:10,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 314 transitions, 658 flow [2022-11-21 17:31:10,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 314 transitions, 658 flow [2022-11-21 17:31:10,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:31:10,680 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;@29a8b685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:31:10,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-21 17:31:10,684 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-21 17:31:10,684 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:31:10,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:10,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:10,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash -6967269, now seen corresponding path program 1 times [2022-11-21 17:31:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:10,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478724305] [2022-11-21 17:31:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478724305] [2022-11-21 17:31:10,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478724305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:10,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:10,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329621313] [2022-11-21 17:31:10,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:10,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 314 [2022-11-21 17:31:10,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 314 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-11-21 17:31:10,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:10,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 314 [2022-11-21 17:31:10,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:10,907 INFO L130 PetriNetUnfolder]: 8/530 cut-off events. [2022-11-21 17:31:10,907 INFO L131 PetriNetUnfolder]: For 60/126 co-relation queries the response was YES. [2022-11-21 17:31:10,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 530 events. 8/530 cut-off events. For 60/126 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1947 event pairs, 1 based on Foata normal form. 144/620 useless extension candidates. Maximal degree in co-relation 380. Up to 34 conditions per place. [2022-11-21 17:31:10,918 INFO L137 encePairwiseOnDemand]: 288/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/289 dead transitions. [2022-11-21 17:31:10,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 289 transitions, 642 flow [2022-11-21 17:31:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:31:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2022-11-21 17:31:10,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9097664543524416 [2022-11-21 17:31:10,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2022-11-21 17:31:10,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2022-11-21 17:31:10,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:10,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2022-11-21 17:31:10,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 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) [2022-11-21 17:31:10,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:10,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:10,929 INFO L175 Difference]: Start difference. First operand has 295 places, 314 transitions, 658 flow. Second operand 3 states and 857 transitions. [2022-11-21 17:31:10,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 289 transitions, 642 flow [2022-11-21 17:31:10,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 289 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:31:10,936 INFO L231 Difference]: Finished difference. Result has 295 places, 289 transitions, 612 flow [2022-11-21 17:31:10,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=295, PETRI_TRANSITIONS=289} [2022-11-21 17:31:10,938 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, 0 predicate places. [2022-11-21 17:31:10,938 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 289 transitions, 612 flow [2022-11-21 17:31:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-11-21 17:31:10,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:10,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:31:10,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1894419914, now seen corresponding path program 1 times [2022-11-21 17:31:10,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989335580] [2022-11-21 17:31:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:10,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:10,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989335580] [2022-11-21 17:31:10,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989335580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:10,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:10,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:10,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556845916] [2022-11-21 17:31:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:10,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:10,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:10,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 314 [2022-11-21 17:31:10,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 289 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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) [2022-11-21 17:31:10,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:10,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 314 [2022-11-21 17:31:10,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:11,136 INFO L130 PetriNetUnfolder]: 8/525 cut-off events. [2022-11-21 17:31:11,136 INFO L131 PetriNetUnfolder]: For 58/108 co-relation queries the response was YES. [2022-11-21 17:31:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 8/525 cut-off events. For 58/108 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1929 event pairs, 1 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 537. Up to 25 conditions per place. [2022-11-21 17:31:11,147 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 11 selfloop transitions, 1 changer transitions 0/287 dead transitions. [2022-11-21 17:31:11,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 632 flow [2022-11-21 17:31:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:31:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-11-21 17:31:11,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8906581740976646 [2022-11-21 17:31:11,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-11-21 17:31:11,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-11-21 17:31:11,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:11,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-11-21 17:31:11,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 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) [2022-11-21 17:31:11,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:11,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:11,157 INFO L175 Difference]: Start difference. First operand has 295 places, 289 transitions, 612 flow. Second operand 3 states and 839 transitions. [2022-11-21 17:31:11,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 632 flow [2022-11-21 17:31:11,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:31:11,165 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 606 flow [2022-11-21 17:31:11,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-11-21 17:31:11,167 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-11-21 17:31:11,167 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 606 flow [2022-11-21 17:31:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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) [2022-11-21 17:31:11,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:11,168 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:11,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:31:11,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:11,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1145722788, now seen corresponding path program 1 times [2022-11-21 17:31:11,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:11,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020341824] [2022-11-21 17:31:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:11,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020341824] [2022-11-21 17:31:11,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020341824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:11,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:11,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904856296] [2022-11-21 17:31:11,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:11,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:11,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:11,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:11,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 314 [2022-11-21 17:31:11,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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) [2022-11-21 17:31:11,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:11,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 314 [2022-11-21 17:31:11,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:12,995 INFO L130 PetriNetUnfolder]: 941/8743 cut-off events. [2022-11-21 17:31:12,996 INFO L131 PetriNetUnfolder]: For 1185/1332 co-relation queries the response was YES. [2022-11-21 17:31:13,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10690 conditions, 8743 events. 941/8743 cut-off events. For 1185/1332 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 95121 event pairs, 907 based on Foata normal form. 0/7572 useless extension candidates. Maximal degree in co-relation 10646. Up to 1510 conditions per place. [2022-11-21 17:31:13,122 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 27 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-11-21 17:31:13,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 662 flow [2022-11-21 17:31:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:31:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-11-21 17:31:13,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598726114649682 [2022-11-21 17:31:13,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-11-21 17:31:13,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-11-21 17:31:13,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:13,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-11-21 17:31:13,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 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) [2022-11-21 17:31:13,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:13,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:13,321 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 606 flow. Second operand 3 states and 810 transitions. [2022-11-21 17:31:13,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 662 flow [2022-11-21 17:31:13,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:31:13,352 INFO L231 Difference]: Finished difference. Result has 293 places, 286 transitions, 607 flow [2022-11-21 17:31:13,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=293, PETRI_TRANSITIONS=286} [2022-11-21 17:31:13,358 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-11-21 17:31:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 286 transitions, 607 flow [2022-11-21 17:31:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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) [2022-11-21 17:31:13,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:13,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:31:13,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 183467225, now seen corresponding path program 1 times [2022-11-21 17:31:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909855289] [2022-11-21 17:31:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:13,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909855289] [2022-11-21 17:31:13,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909855289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:13,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:13,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488296353] [2022-11-21 17:31:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:13,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 314 [2022-11-21 17:31:13,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 286 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2022-11-21 17:31:13,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:13,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 314 [2022-11-21 17:31:13,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:14,492 INFO L130 PetriNetUnfolder]: 380/5244 cut-off events. [2022-11-21 17:31:14,492 INFO L131 PetriNetUnfolder]: For 652/727 co-relation queries the response was YES. [2022-11-21 17:31:14,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 5244 events. 380/5244 cut-off events. For 652/727 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 50329 event pairs, 285 based on Foata normal form. 0/4788 useless extension candidates. Maximal degree in co-relation 6077. Up to 623 conditions per place. [2022-11-21 17:31:14,542 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 22 selfloop transitions, 3 changer transitions 0/285 dead transitions. [2022-11-21 17:31:14,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 285 transitions, 667 flow [2022-11-21 17:31:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:31:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-11-21 17:31:14,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8704883227176221 [2022-11-21 17:31:14,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-11-21 17:31:14,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-11-21 17:31:14,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:14,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-11-21 17:31:14,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2022-11-21 17:31:14,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:14,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:14,553 INFO L175 Difference]: Start difference. First operand has 293 places, 286 transitions, 607 flow. Second operand 3 states and 820 transitions. [2022-11-21 17:31:14,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 285 transitions, 667 flow [2022-11-21 17:31:14,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 285 transitions, 663 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:31:14,559 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 612 flow [2022-11-21 17:31:14,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-11-21 17:31:14,560 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -7 predicate places. [2022-11-21 17:31:14,560 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 612 flow [2022-11-21 17:31:14,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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) [2022-11-21 17:31:14,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:14,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:31:14,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash 119940130, now seen corresponding path program 1 times [2022-11-21 17:31:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279516250] [2022-11-21 17:31:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:14,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:14,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279516250] [2022-11-21 17:31:14,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279516250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:14,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:14,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:14,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309280841] [2022-11-21 17:31:14,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:14,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:14,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:14,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 314 [2022-11-21 17:31:14,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2022-11-21 17:31:14,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:14,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 314 [2022-11-21 17:31:14,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:31:14,829 INFO L130 PetriNetUnfolder]: 16/861 cut-off events. [2022-11-21 17:31:14,830 INFO L131 PetriNetUnfolder]: For 125/303 co-relation queries the response was YES. [2022-11-21 17:31:14,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 861 events. 16/861 cut-off events. For 125/303 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4333 event pairs, 3 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 921. Up to 42 conditions per place. [2022-11-21 17:31:14,848 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2022-11-21 17:31:14,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 287 transitions, 654 flow [2022-11-21 17:31:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:31:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2022-11-21 17:31:14,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012738853503185 [2022-11-21 17:31:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2022-11-21 17:31:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2022-11-21 17:31:14,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:31:14,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2022-11-21 17:31:14,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2022-11-21 17:31:14,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:14,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-21 17:31:14,858 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 612 flow. Second operand 3 states and 849 transitions. [2022-11-21 17:31:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 287 transitions, 654 flow [2022-11-21 17:31:14,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:31:14,864 INFO L231 Difference]: Finished difference. Result has 291 places, 284 transitions, 624 flow [2022-11-21 17:31:14,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=291, PETRI_TRANSITIONS=284} [2022-11-21 17:31:14,865 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -4 predicate places. [2022-11-21 17:31:14,866 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 284 transitions, 624 flow [2022-11-21 17:31:14,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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) [2022-11-21 17:31:14,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:31:14,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:14,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:31:14,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-21 17:31:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 596000033, now seen corresponding path program 1 times [2022-11-21 17:31:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:14,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778540844] [2022-11-21 17:31:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:14,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:15,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778540844] [2022-11-21 17:31:15,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778540844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:15,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:15,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:31:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230945887] [2022-11-21 17:31:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:15,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:31:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:31:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:31:15,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 314 [2022-11-21 17:31:15,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 284 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 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) [2022-11-21 17:31:15,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:31:15,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 314 [2022-11-21 17:31:15,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand