./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro --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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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-8393723 [2022-11-18 20:20:35,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:20:35,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:20:35,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:20:35,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:20:35,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:20:35,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:20:35,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:20:35,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:20:35,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:20:35,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:20:35,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:20:35,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:20:35,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:20:35,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:20:35,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:20:35,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:20:35,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:20:35,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:20:35,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:20:35,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:20:35,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:20:35,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:20:35,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:20:35,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:20:35,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:20:35,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:20:35,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:20:35,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:20:35,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:20:35,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:20:35,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:20:35,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:20:35,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:20:35,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:20:35,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:20:35,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:20:35,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:20:35,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:20:35,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:20:35,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:20:35,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:20:35,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:20:35,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:20:35,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:20:35,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:20:35,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:20:35,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:20:35,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:20:35,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:20:35,741 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:20:35,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:20:35,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:20:35,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:20:35,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:20:35,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:20:35,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:20:35,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:20:35,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:20:35,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:20:35,746 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:20:35,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:20:35,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:20:35,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:20:35,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:20:35,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:20:35,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:20:35,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:20:35,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:35,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:20:35,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:20:35,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:20:35,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:20:35,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:20:35,749 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:20:35,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:20:35,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:20:35,750 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_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-18 20:20:36,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:20:36,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:20:36,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:20:36,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:20:36,115 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:20:36,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-18 20:20:36,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/data/c30554f80/d3bb02e05a9848ffb1710d203bcb94f0/FLAG074b0f10e [2022-11-18 20:20:36,818 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:20:36,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-18 20:20:36,841 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/data/c30554f80/d3bb02e05a9848ffb1710d203bcb94f0/FLAG074b0f10e [2022-11-18 20:20:37,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/data/c30554f80/d3bb02e05a9848ffb1710d203bcb94f0 [2022-11-18 20:20:37,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:20:37,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:20:37,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:37,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:20:37,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:20:37,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb5b902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37, skipping insertion in model container [2022-11-18 20:20:37,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:20:37,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:20:37,700 WARN L234 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_e1af838d-635f-4dcd-8089-584de7feea9a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-18 20:20:37,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:37,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:20:37,820 WARN L234 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_e1af838d-635f-4dcd-8089-584de7feea9a/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-18 20:20:37,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:37,894 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:20:37,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37 WrapperNode [2022-11-18 20:20:37,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:37,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:37,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:20:37,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:20:37,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,968 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2022-11-18 20:20:37,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:37,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:20:37,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:20:37,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:20:37,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:37,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:20:38,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:20:38,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:20:38,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:20:38,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (1/1) ... [2022-11-18 20:20:38,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:38,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:20:38,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1af838d-635f-4dcd-8089-584de7feea9a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:20:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:20:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:20:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:20:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:20:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:20:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:20:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:20:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:20:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:20:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:20:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:20:38,137 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:20:38,277 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:20:38,280 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:20:38,565 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:20:38,573 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:20:38,574 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:20:38,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:38 BoogieIcfgContainer [2022-11-18 20:20:38,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:20:38,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:20:38,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:20:38,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:20:38,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:20:37" (1/3) ... [2022-11-18 20:20:38,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed3efd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:38, skipping insertion in model container [2022-11-18 20:20:38,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:37" (2/3) ... [2022-11-18 20:20:38,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed3efd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:38, skipping insertion in model container [2022-11-18 20:20:38,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:38" (3/3) ... [2022-11-18 20:20:38,587 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-18 20:20:38,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:20:38,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:20:38,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:20:38,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:20:38,746 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:20:38,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-11-18 20:20:38,923 INFO L130 PetriNetUnfolder]: 17/180 cut-off events. [2022-11-18 20:20:38,923 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:20:38,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 17/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 514 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-18 20:20:38,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 136 transitions, 280 flow [2022-11-18 20:20:38,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 136 transitions, 280 flow [2022-11-18 20:20:38,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:38,991 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;@5bc80b24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:38,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:20:39,046 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-18 20:20:39,046 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:39,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:39,047 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] [2022-11-18 20:20:39,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:20:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash -604963906, now seen corresponding path program 1 times [2022-11-18 20:20:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:39,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234470105] [2022-11-18 20:20:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:39,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:39,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234470105] [2022-11-18 20:20:39,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234470105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:39,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:39,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422359318] [2022-11-18 20:20:39,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:39,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:39,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:39,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 136 [2022-11-18 20:20:39,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 136 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-11-18 20:20:39,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:39,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 136 [2022-11-18 20:20:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:39,585 INFO L130 PetriNetUnfolder]: 1/162 cut-off events. [2022-11-18 20:20:39,585 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:20:39,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 162 events. 1/162 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 16/164 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-18 20:20:39,588 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 2 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2022-11-18 20:20:39,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 260 flow [2022-11-18 20:20:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2022-11-18 20:20:39,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9448529411764706 [2022-11-18 20:20:39,614 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2022-11-18 20:20:39,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2022-11-18 20:20:39,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:39,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2022-11-18 20:20:39,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2022-11-18 20:20:39,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-18 20:20:39,631 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-18 20:20:39,634 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 280 flow. Second operand 2 states and 257 transitions. [2022-11-18 20:20:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 260 flow [2022-11-18 20:20:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:39,649 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 256 flow [2022-11-18 20:20:39,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2022-11-18 20:20:39,660 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2022-11-18 20:20:39,660 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 256 flow [2022-11-18 20:20:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-11-18 20:20:39,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:39,663 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] [2022-11-18 20:20:39,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:20:39,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:20:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 282539775, now seen corresponding path program 1 times [2022-11-18 20:20:39,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:39,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055221048] [2022-11-18 20:20:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:39,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:39,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055221048] [2022-11-18 20:20:39,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055221048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:39,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:39,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:20:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896055418] [2022-11-18 20:20:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:39,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:39,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 136 [2022-11-18 20:20:39,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-18 20:20:39,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:39,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 136 [2022-11-18 20:20:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:40,017 INFO L130 PetriNetUnfolder]: 0/143 cut-off events. [2022-11-18 20:20:40,018 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 20:20:40,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 143 events. 0/143 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 146 event pairs, 0 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 20:20:40,019 INFO L137 encePairwiseOnDemand]: 133/136 looper letters, 9 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-11-18 20:20:40,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 282 flow [2022-11-18 20:20:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-18 20:20:40,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-18 20:20:40,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-18 20:20:40,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-18 20:20:40,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:40,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-18 20:20:40,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-18 20:20:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2022-11-18 20:20:40,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2022-11-18 20:20:40,028 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 256 flow. Second operand 3 states and 357 transitions. [2022-11-18 20:20:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 282 flow [2022-11-18 20:20:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:40,032 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 264 flow [2022-11-18 20:20:40,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-11-18 20:20:40,033 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2022-11-18 20:20:40,034 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 264 flow [2022-11-18 20:20:40,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-18 20:20:40,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:40,035 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] [2022-11-18 20:20:40,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:20:40,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:20:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1176707219, now seen corresponding path program 1 times [2022-11-18 20:20:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:40,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569873608] [2022-11-18 20:20:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:40,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569873608] [2022-11-18 20:20:40,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569873608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:40,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:40,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678927455] [2022-11-18 20:20:40,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:40,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:40,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:40,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-11-18 20:20:40,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-11-18 20:20:40,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:40,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-11-18 20:20:40,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:40,288 INFO L130 PetriNetUnfolder]: 29/511 cut-off events. [2022-11-18 20:20:40,289 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-18 20:20:40,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 511 events. 29/511 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2550 event pairs, 11 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 604. Up to 53 conditions per place. [2022-11-18 20:20:40,298 INFO L137 encePairwiseOnDemand]: 127/136 looper letters, 18 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2022-11-18 20:20:40,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 329 flow [2022-11-18 20:20:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-11-18 20:20:40,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-11-18 20:20:40,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-11-18 20:20:40,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-11-18 20:20:40,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:40,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-11-18 20:20:40,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-18 20:20:40,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2022-11-18 20:20:40,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2022-11-18 20:20:40,313 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 264 flow. Second operand 3 states and 348 transitions. [2022-11-18 20:20:40,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 329 flow [2022-11-18 20:20:40,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 131 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:20:40,323 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 298 flow [2022-11-18 20:20:40,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2022-11-18 20:20:40,326 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2022-11-18 20:20:40,326 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 298 flow [2022-11-18 20:20:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-11-18 20:20:40,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:40,327 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] [2022-11-18 20:20:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:20:40,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:20:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1356610289, now seen corresponding path program 1 times [2022-11-18 20:20:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:40,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348348949] [2022-11-18 20:20:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:40,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:20:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:40,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:20:40,462 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:20:40,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 20:20:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 20:20:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 20:20:40,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 20:20:40,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 20:20:40,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 20:20:40,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 20:20:40,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 20:20:40,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 20:20:40,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 20:20:40,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 20:20:40,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:20:40,479 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:20:40,485 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:20:40,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:20:40,556 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:20:40,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 182 transitions, 382 flow [2022-11-18 20:20:40,626 INFO L130 PetriNetUnfolder]: 31/301 cut-off events. [2022-11-18 20:20:40,627 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:20:40,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 31/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1032 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2022-11-18 20:20:40,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 182 transitions, 382 flow [2022-11-18 20:20:40,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 182 transitions, 382 flow [2022-11-18 20:20:40,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:40,640 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;@5bc80b24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:40,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 20:20:40,648 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-18 20:20:40,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:40,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:40,653 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] [2022-11-18 20:20:40,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:20:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1953810764, now seen corresponding path program 1 times [2022-11-18 20:20:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:40,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85876785] [2022-11-18 20:20:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:40,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:40,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85876785] [2022-11-18 20:20:40,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85876785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:40,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:40,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868693445] [2022-11-18 20:20:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:40,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:40,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 182 [2022-11-18 20:20:40,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 182 transitions, 382 flow. Second operand has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2022-11-18 20:20:40,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:40,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 182 [2022-11-18 20:20:40,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:40,847 INFO L130 PetriNetUnfolder]: 3/270 cut-off events. [2022-11-18 20:20:40,847 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-18 20:20:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 270 events. 3/270 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 750 event pairs, 0 based on Foata normal form. 42/287 useless extension candidates. Maximal degree in co-relation 166. Up to 7 conditions per place. [2022-11-18 20:20:40,850 INFO L137 encePairwiseOnDemand]: 165/182 looper letters, 4 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2022-11-18 20:20:40,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 164 transitions, 354 flow [2022-11-18 20:20:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 341 transitions. [2022-11-18 20:20:40,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9368131868131868 [2022-11-18 20:20:40,854 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 341 transitions. [2022-11-18 20:20:40,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 341 transitions. [2022-11-18 20:20:40,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:40,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 341 transitions. [2022-11-18 20:20:40,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 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) [2022-11-18 20:20:40,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-11-18 20:20:40,859 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-11-18 20:20:40,859 INFO L175 Difference]: Start difference. First operand has 168 places, 182 transitions, 382 flow. Second operand 2 states and 341 transitions. [2022-11-18 20:20:40,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 164 transitions, 354 flow [2022-11-18 20:20:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 164 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:40,868 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 346 flow [2022-11-18 20:20:40,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=346, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2022-11-18 20:20:40,871 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 0 predicate places. [2022-11-18 20:20:40,872 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 346 flow [2022-11-18 20:20:40,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2022-11-18 20:20:40,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:40,873 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] [2022-11-18 20:20:40,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:20:40,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:20:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1066307083, now seen corresponding path program 1 times [2022-11-18 20:20:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:40,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775388402] [2022-11-18 20:20:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:41,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775388402] [2022-11-18 20:20:41,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775388402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:41,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:41,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:20:41,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358118063] [2022-11-18 20:20:41,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:41,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:41,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 182 [2022-11-18 20:20:41,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2022-11-18 20:20:41,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:41,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 182 [2022-11-18 20:20:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:41,114 INFO L130 PetriNetUnfolder]: 2/251 cut-off events. [2022-11-18 20:20:41,115 INFO L131 PetriNetUnfolder]: For 32/78 co-relation queries the response was YES. [2022-11-18 20:20:41,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 251 events. 2/251 cut-off events. For 32/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 626 event pairs, 0 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-18 20:20:41,117 INFO L137 encePairwiseOnDemand]: 179/182 looper letters, 13 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2022-11-18 20:20:41,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 168 transitions, 384 flow [2022-11-18 20:20:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-18 20:20:41,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86996336996337 [2022-11-18 20:20:41,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-18 20:20:41,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-18 20:20:41,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:41,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-18 20:20:41,124 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) [2022-11-18 20:20:41,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:41,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:41,128 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 346 flow. Second operand 3 states and 475 transitions. [2022-11-18 20:20:41,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 168 transitions, 384 flow [2022-11-18 20:20:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 168 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:41,133 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 358 flow [2022-11-18 20:20:41,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2022-11-18 20:20:41,138 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 3 predicate places. [2022-11-18 20:20:41,138 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 358 flow [2022-11-18 20:20:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2022-11-18 20:20:41,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:41,140 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] [2022-11-18 20:20:41,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:20:41,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:20:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:41,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1991257521, now seen corresponding path program 1 times [2022-11-18 20:20:41,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:41,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130943353] [2022-11-18 20:20:41,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:41,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:41,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130943353] [2022-11-18 20:20:41,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130943353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:41,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:41,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780239173] [2022-11-18 20:20:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:41,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 182 [2022-11-18 20:20:41,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2022-11-18 20:20:41,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:41,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 182 [2022-11-18 20:20:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:42,890 INFO L130 PetriNetUnfolder]: 1375/7696 cut-off events. [2022-11-18 20:20:42,890 INFO L131 PetriNetUnfolder]: For 207/368 co-relation queries the response was YES. [2022-11-18 20:20:42,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 7696 events. 1375/7696 cut-off events. For 207/368 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 83976 event pairs, 514 based on Foata normal form. 9/6619 useless extension candidates. Maximal degree in co-relation 10210. Up to 1414 conditions per place. [2022-11-18 20:20:42,950 INFO L137 encePairwiseOnDemand]: 163/182 looper letters, 42 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2022-11-18 20:20:42,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 190 transitions, 531 flow [2022-11-18 20:20:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2022-11-18 20:20:42,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8424908424908425 [2022-11-18 20:20:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2022-11-18 20:20:42,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2022-11-18 20:20:42,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:42,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2022-11-18 20:20:42,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-18 20:20:42,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:42,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:42,960 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 358 flow. Second operand 3 states and 460 transitions. [2022-11-18 20:20:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 190 transitions, 531 flow [2022-11-18 20:20:42,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 190 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:20:42,967 INFO L231 Difference]: Finished difference. Result has 174 places, 179 transitions, 478 flow [2022-11-18 20:20:42,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=174, PETRI_TRANSITIONS=179} [2022-11-18 20:20:42,970 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 6 predicate places. [2022-11-18 20:20:42,970 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 179 transitions, 478 flow [2022-11-18 20:20:42,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2022-11-18 20:20:42,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:42,971 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] [2022-11-18 20:20:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:20:42,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:20:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash -265031934, now seen corresponding path program 1 times [2022-11-18 20:20:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:42,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797173328] [2022-11-18 20:20:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:43,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:43,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797173328] [2022-11-18 20:20:43,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797173328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:43,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:43,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229773564] [2022-11-18 20:20:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:43,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:43,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 182 [2022-11-18 20:20:43,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 179 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2022-11-18 20:20:43,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:43,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 182 [2022-11-18 20:20:43,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:44,720 INFO L130 PetriNetUnfolder]: 1713/8183 cut-off events. [2022-11-18 20:20:44,720 INFO L131 PetriNetUnfolder]: For 2586/3018 co-relation queries the response was YES. [2022-11-18 20:20:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13942 conditions, 8183 events. 1713/8183 cut-off events. For 2586/3018 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 87394 event pairs, 781 based on Foata normal form. 17/7380 useless extension candidates. Maximal degree in co-relation 13934. Up to 2616 conditions per place. [2022-11-18 20:20:44,812 INFO L137 encePairwiseOnDemand]: 173/182 looper letters, 60 selfloop transitions, 14 changer transitions 0/206 dead transitions. [2022-11-18 20:20:44,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 206 transitions, 742 flow [2022-11-18 20:20:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2022-11-18 20:20:44,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168498168498168 [2022-11-18 20:20:44,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2022-11-18 20:20:44,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2022-11-18 20:20:44,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:44,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2022-11-18 20:20:44,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2022-11-18 20:20:44,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:44,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-18 20:20:44,822 INFO L175 Difference]: Start difference. First operand has 174 places, 179 transitions, 478 flow. Second operand 3 states and 446 transitions. [2022-11-18 20:20:44,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 206 transitions, 742 flow [2022-11-18 20:20:44,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 206 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:20:44,838 INFO L231 Difference]: Finished difference. Result has 176 places, 191 transitions, 576 flow [2022-11-18 20:20:44,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=176, PETRI_TRANSITIONS=191} [2022-11-18 20:20:44,840 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 8 predicate places. [2022-11-18 20:20:44,841 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 191 transitions, 576 flow [2022-11-18 20:20:44,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2022-11-18 20:20:44,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:44,842 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] [2022-11-18 20:20:44,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:20:44,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-18 20:20:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:44,845 INFO L85 PathProgramCache]: Analyzing trace with hash 370973271, now seen corresponding path program 1 times [2022-11-18 20:20:44,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:44,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304057660] [2022-11-18 20:20:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:44,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:20:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:44,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:20:44,929 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:20:44,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-18 20:20:44,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-18 20:20:44,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-18 20:20:44,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-18 20:20:44,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-18 20:20:44,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-18 20:20:44,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-18 20:20:44,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-18 20:20:44,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-18 20:20:44,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-18 20:20:44,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-18 20:20:44,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-18 20:20:44,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-18 20:20:44,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-18 20:20:44,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-18 20:20:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:20:44,936 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:20:44,939 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:20:44,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:20:44,988 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:20:44,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 228 transitions, 486 flow [2022-11-18 20:20:45,138 INFO L130 PetriNetUnfolder]: 50/467 cut-off events. [2022-11-18 20:20:45,138 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:20:45,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 467 events. 50/467 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1765 event pairs, 1 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2022-11-18 20:20:45,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 228 transitions, 486 flow [2022-11-18 20:20:45,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 228 transitions, 486 flow [2022-11-18 20:20:45,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:45,151 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;@5bc80b24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:45,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 20:20:45,157 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-18 20:20:45,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:45,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:45,157 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] [2022-11-18 20:20:45,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:20:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash -292556520, now seen corresponding path program 1 times [2022-11-18 20:20:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437523315] [2022-11-18 20:20:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:45,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437523315] [2022-11-18 20:20:45,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437523315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:45,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:45,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470637854] [2022-11-18 20:20:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:45,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:45,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 228 [2022-11-18 20:20:45,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 228 transitions, 486 flow. Second operand has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 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) [2022-11-18 20:20:45,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:45,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 228 [2022-11-18 20:20:45,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:45,284 INFO L130 PetriNetUnfolder]: 8/421 cut-off events. [2022-11-18 20:20:45,285 INFO L131 PetriNetUnfolder]: For 54/69 co-relation queries the response was YES. [2022-11-18 20:20:45,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 421 events. 8/421 cut-off events. For 54/69 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1471 event pairs, 1 based on Foata normal form. 104/485 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-18 20:20:45,289 INFO L137 encePairwiseOnDemand]: 205/228 looper letters, 6 selfloop transitions, 0 changer transitions 0/204 dead transitions. [2022-11-18 20:20:45,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 204 transitions, 450 flow [2022-11-18 20:20:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 425 transitions. [2022-11-18 20:20:45,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9320175438596491 [2022-11-18 20:20:45,292 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 425 transitions. [2022-11-18 20:20:45,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 425 transitions. [2022-11-18 20:20:45,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:45,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 425 transitions. [2022-11-18 20:20:45,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 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) [2022-11-18 20:20:45,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-11-18 20:20:45,296 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-11-18 20:20:45,296 INFO L175 Difference]: Start difference. First operand has 209 places, 228 transitions, 486 flow. Second operand 2 states and 425 transitions. [2022-11-18 20:20:45,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 204 transitions, 450 flow [2022-11-18 20:20:45,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 204 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:45,301 INFO L231 Difference]: Finished difference. Result has 209 places, 204 transitions, 438 flow [2022-11-18 20:20:45,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=438, PETRI_PLACES=209, PETRI_TRANSITIONS=204} [2022-11-18 20:20:45,302 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 0 predicate places. [2022-11-18 20:20:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 204 transitions, 438 flow [2022-11-18 20:20:45,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 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) [2022-11-18 20:20:45,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:45,303 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] [2022-11-18 20:20:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:20:45,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:20:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash 594947161, now seen corresponding path program 1 times [2022-11-18 20:20:45,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:45,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743703249] [2022-11-18 20:20:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:45,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:45,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743703249] [2022-11-18 20:20:45,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743703249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:45,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:45,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:20:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527614848] [2022-11-18 20:20:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:45,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:45,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 228 [2022-11-18 20:20:45,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 204 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-11-18 20:20:45,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:45,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 228 [2022-11-18 20:20:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:45,473 INFO L130 PetriNetUnfolder]: 7/402 cut-off events. [2022-11-18 20:20:45,473 INFO L131 PetriNetUnfolder]: For 67/162 co-relation queries the response was YES. [2022-11-18 20:20:45,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 402 events. 7/402 cut-off events. For 67/162 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1364 event pairs, 1 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 460. Up to 30 conditions per place. [2022-11-18 20:20:45,478 INFO L137 encePairwiseOnDemand]: 225/228 looper letters, 15 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2022-11-18 20:20:45,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 480 flow [2022-11-18 20:20:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-11-18 20:20:45,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640350877192983 [2022-11-18 20:20:45,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-11-18 20:20:45,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-11-18 20:20:45,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:45,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-11-18 20:20:45,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-11-18 20:20:45,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:20:45,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:20:45,487 INFO L175 Difference]: Start difference. First operand has 209 places, 204 transitions, 438 flow. Second operand 3 states and 591 transitions. [2022-11-18 20:20:45,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 480 flow [2022-11-18 20:20:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 208 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:45,493 INFO L231 Difference]: Finished difference. Result has 212 places, 205 transitions, 450 flow [2022-11-18 20:20:45,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=212, PETRI_TRANSITIONS=205} [2022-11-18 20:20:45,494 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-11-18 20:20:45,495 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 205 transitions, 450 flow [2022-11-18 20:20:45,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-11-18 20:20:45,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:45,496 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] [2022-11-18 20:20:45,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:20:45,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:20:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash 399763295, now seen corresponding path program 1 times [2022-11-18 20:20:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:45,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211078462] [2022-11-18 20:20:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:45,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:45,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211078462] [2022-11-18 20:20:45,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211078462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:45,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:45,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:45,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197069056] [2022-11-18 20:20:45,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:45,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:45,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 228 [2022-11-18 20:20:45,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 205 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-11-18 20:20:45,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:45,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 228 [2022-11-18 20:20:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:03,121 INFO L130 PetriNetUnfolder]: 35161/121422 cut-off events. [2022-11-18 20:21:03,121 INFO L131 PetriNetUnfolder]: For 5243/8310 co-relation queries the response was YES. [2022-11-18 20:21:03,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175037 conditions, 121422 events. 35161/121422 cut-off events. For 5243/8310 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 1820577 event pairs, 14664 based on Foata normal form. 59/102140 useless extension candidates. Maximal degree in co-relation 175029. Up to 29486 conditions per place. [2022-11-18 20:21:04,539 INFO L137 encePairwiseOnDemand]: 201/228 looper letters, 62 selfloop transitions, 20 changer transitions 0/242 dead transitions. [2022-11-18 20:21:04,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 242 transitions, 709 flow [2022-11-18 20:21:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:21:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:21:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-11-18 20:21:04,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.827485380116959 [2022-11-18 20:21:04,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-11-18 20:21:04,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-11-18 20:21:04,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:04,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-11-18 20:21:04,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-11-18 20:21:04,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:21:04,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:21:04,548 INFO L175 Difference]: Start difference. First operand has 212 places, 205 transitions, 450 flow. Second operand 3 states and 566 transitions. [2022-11-18 20:21:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 242 transitions, 709 flow [2022-11-18 20:21:04,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 242 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:04,561 INFO L231 Difference]: Finished difference. Result has 215 places, 225 transitions, 622 flow [2022-11-18 20:21:04,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=215, PETRI_TRANSITIONS=225} [2022-11-18 20:21:04,563 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 6 predicate places. [2022-11-18 20:21:04,563 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 225 transitions, 622 flow [2022-11-18 20:21:04,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-11-18 20:21:04,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:04,564 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] [2022-11-18 20:21:04,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:21:04,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:21:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -683936210, now seen corresponding path program 1 times [2022-11-18 20:21:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:04,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653013684] [2022-11-18 20:21:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:04,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:04,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:04,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653013684] [2022-11-18 20:21:04,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653013684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:04,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:04,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:21:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355876118] [2022-11-18 20:21:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:21:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:04,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:21:04,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:21:04,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-11-18 20:21:04,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 225 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-11-18 20:21:04,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:04,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-11-18 20:21:04,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:25,045 INFO L130 PetriNetUnfolder]: 44875/139834 cut-off events. [2022-11-18 20:21:25,045 INFO L131 PetriNetUnfolder]: For 59386/65509 co-relation queries the response was YES. [2022-11-18 20:21:25,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266832 conditions, 139834 events. 44875/139834 cut-off events. For 59386/65509 co-relation queries the response was YES. Maximal size of possible extension queue 3275. Compared 2050476 event pairs, 21503 based on Foata normal form. 247/124590 useless extension candidates. Maximal degree in co-relation 266823. Up to 58501 conditions per place. [2022-11-18 20:21:26,573 INFO L137 encePairwiseOnDemand]: 215/228 looper letters, 92 selfloop transitions, 22 changer transitions 0/272 dead transitions. [2022-11-18 20:21:26,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 272 transitions, 1056 flow [2022-11-18 20:21:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:21:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:21:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2022-11-18 20:21:26,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8070175438596491 [2022-11-18 20:21:26,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2022-11-18 20:21:26,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2022-11-18 20:21:26,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:26,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2022-11-18 20:21:26,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2022-11-18 20:21:26,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:21:26,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-18 20:21:26,583 INFO L175 Difference]: Start difference. First operand has 215 places, 225 transitions, 622 flow. Second operand 3 states and 552 transitions. [2022-11-18 20:21:26,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 272 transitions, 1056 flow [2022-11-18 20:21:26,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 272 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:21:26,696 INFO L231 Difference]: Finished difference. Result has 217 places, 245 transitions, 788 flow [2022-11-18 20:21:26,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=217, PETRI_TRANSITIONS=245} [2022-11-18 20:21:26,697 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 8 predicate places. [2022-11-18 20:21:26,698 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 245 transitions, 788 flow [2022-11-18 20:21:26,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-11-18 20:21:26,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:26,699 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, 1, 1, 1, 1] [2022-11-18 20:21:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:21:26,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:21:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash 50429552, now seen corresponding path program 1 times [2022-11-18 20:21:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:26,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276320166] [2022-11-18 20:21:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:21:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:26,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276320166] [2022-11-18 20:21:26,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276320166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:26,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:26,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:21:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684152532] [2022-11-18 20:21:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:21:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:21:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:21:26,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-11-18 20:21:26,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 245 transitions, 788 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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) [2022-11-18 20:21:26,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:26,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-11-18 20:21:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand