./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/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_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/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_59fb31ed-7919-40e1-8867-d918f6a9ee93/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 c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- 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 18:36:50,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:36:50,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:36:50,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:36:50,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:36:50,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:36:50,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:36:50,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:36:50,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:36:50,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:36:50,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:36:50,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:36:50,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:36:50,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:36:50,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:36:50,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:36:50,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:36:50,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:36:50,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:36:50,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:36:50,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:36:50,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:36:50,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:36:50,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:36:50,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:36:50,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:36:50,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:36:50,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:36:50,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:36:50,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:36:50,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:36:50,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:36:50,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:36:50,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:36:50,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:36:50,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:36:50,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:36:50,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:36:50,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:36:50,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:36:50,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:36:50,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:36:50,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:36:50,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:36:50,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:36:50,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:36:50,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:36:50,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:36:50,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:36:50,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:36:50,741 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:36:50,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:36:50,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:36:50,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:36:50,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:36:50,744 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:36:50,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:36:50,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:36:50,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:36:50,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:36:50,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:36:50,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:36:50,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:36:50,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:36:50,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:36:50,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:36:50,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:36:50,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:36:50,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:36:50,746 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:36:50,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:36:50,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:36:50,747 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_59fb31ed-7919-40e1-8867-d918f6a9ee93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2022-11-18 18:36:51,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:36:51,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:36:51,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:36:51,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:36:51,062 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:36:51,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2022-11-18 18:36:51,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/data/9983bb9e9/d3716aa438884200bcb99132e3dcedc5/FLAG52a361637 [2022-11-18 18:36:51,720 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:36:51,720 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2022-11-18 18:36:51,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/data/9983bb9e9/d3716aa438884200bcb99132e3dcedc5/FLAG52a361637 [2022-11-18 18:36:52,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/data/9983bb9e9/d3716aa438884200bcb99132e3dcedc5 [2022-11-18 18:36:52,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:36:52,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:36:52,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:36:52,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:36:52,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:36:52,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523699e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52, skipping insertion in model container [2022-11-18 18:36:52,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:36:52,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:36:52,519 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_59fb31ed-7919-40e1-8867-d918f6a9ee93/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i[30577,30590] [2022-11-18 18:36:52,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:36:52,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:36:52,596 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_59fb31ed-7919-40e1-8867-d918f6a9ee93/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i[30577,30590] [2022-11-18 18:36:52,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:36:52,640 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:36:52,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52 WrapperNode [2022-11-18 18:36:52,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:36:52,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:36:52,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:36:52,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:36:52,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,714 INFO L138 Inliner]: procedures = 174, calls = 19, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 96 [2022-11-18 18:36:52,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:36:52,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:36:52,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:36:52,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:36:52,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:36:52,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:36:52,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:36:52,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:36:52,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (1/1) ... [2022-11-18 18:36:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:36:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:36:52,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:36:52,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59fb31ed-7919-40e1-8867-d918f6a9ee93/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:36:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-18 18:36:52,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-18 18:36:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 18:36:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 18:36:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:36:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:36:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:36:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:36:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:36:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:36:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:36:52,825 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 18:36:53,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:36:53,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:36:53,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:36:53,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:36:53,373 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:36:53,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:36:53 BoogieIcfgContainer [2022-11-18 18:36:53,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:36:53,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:36:53,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:36:53,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:36:53,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:36:52" (1/3) ... [2022-11-18 18:36:53,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302e31be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:36:53, skipping insertion in model container [2022-11-18 18:36:53,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:36:52" (2/3) ... [2022-11-18 18:36:53,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302e31be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:36:53, skipping insertion in model container [2022-11-18 18:36:53,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:36:53" (3/3) ... [2022-11-18 18:36:53,386 INFO L112 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2022-11-18 18:36:53,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:36:53,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:36:53,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 18:36:53,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:36:53,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:36:53,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 111 transitions, 232 flow [2022-11-18 18:36:53,598 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2022-11-18 18:36:53,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:36:53,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 121 events. 7/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2022-11-18 18:36:53,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 111 transitions, 232 flow [2022-11-18 18:36:53,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 110 transitions, 228 flow [2022-11-18 18:36:53,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:36:53,642 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;@7f1e0eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:36:53,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-18 18:36:53,664 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-11-18 18:36:53,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:36:53,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:53,666 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] [2022-11-18 18:36:53,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-18 18:36:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -199725323, now seen corresponding path program 1 times [2022-11-18 18:36:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:53,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951253646] [2022-11-18 18:36:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:53,989 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 18:36:53,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:53,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951253646] [2022-11-18 18:36:53,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951253646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:53,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:53,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268654531] [2022-11-18 18:36:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:54,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:54,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:54,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2022-11-18 18:36:54,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 18:36:54,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:54,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2022-11-18 18:36:54,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:54,123 INFO L130 PetriNetUnfolder]: 32/230 cut-off events. [2022-11-18 18:36:54,123 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:36:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 230 events. 32/230 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 615 event pairs, 5 based on Foata normal form. 61/266 useless extension candidates. Maximal degree in co-relation 279. Up to 39 conditions per place. [2022-11-18 18:36:54,127 INFO L137 encePairwiseOnDemand]: 98/111 looper letters, 15 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2022-11-18 18:36:54,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 249 flow [2022-11-18 18:36:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:36:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-18 18:36:54,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9309309309309309 [2022-11-18 18:36:54,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-18 18:36:54,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-18 18:36:54,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:54,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-18 18:36:54,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 18:36:54,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 18:36:54,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 18:36:54,157 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 228 flow. Second operand 3 states and 310 transitions. [2022-11-18 18:36:54,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 249 flow [2022-11-18 18:36:54,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:36:54,163 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 219 flow [2022-11-18 18:36:54,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2022-11-18 18:36:54,169 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -11 predicate places. [2022-11-18 18:36:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 219 flow [2022-11-18 18:36:54,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 18:36:54,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:54,170 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] [2022-11-18 18:36:54,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:36:54,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-18 18:36:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2035890889, now seen corresponding path program 1 times [2022-11-18 18:36:54,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:54,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215647188] [2022-11-18 18:36:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:54,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:54,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:36:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:54,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:36:54,266 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:36:54,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-18 18:36:54,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-11-18 18:36:54,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-11-18 18:36:54,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-11-18 18:36:54,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-11-18 18:36:54,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-11-18 18:36:54,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-11-18 18:36:54,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2022-11-18 18:36:54,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-11-18 18:36:54,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-11-18 18:36:54,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-11-18 18:36:54,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-11-18 18:36:54,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-11-18 18:36:54,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-11-18 18:36:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:36:54,285 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:36:54,289 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:36:54,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:36:54,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:36:54,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 187 transitions, 398 flow [2022-11-18 18:36:54,429 INFO L130 PetriNetUnfolder]: 10/196 cut-off events. [2022-11-18 18:36:54,430 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:36:54,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 196 events. 10/196 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 399 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2022-11-18 18:36:54,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 187 transitions, 398 flow [2022-11-18 18:36:54,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 359 flow [2022-11-18 18:36:54,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:36:54,438 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;@7f1e0eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:36:54,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 18:36:54,443 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-11-18 18:36:54,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:36:54,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:54,444 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] [2022-11-18 18:36:54,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 18:36:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 599065755, now seen corresponding path program 1 times [2022-11-18 18:36:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:54,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026474510] [2022-11-18 18:36:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:54,512 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 18:36:54,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026474510] [2022-11-18 18:36:54,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026474510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:54,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:54,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489299697] [2022-11-18 18:36:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:54,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 187 [2022-11-18 18:36:54,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 18:36:54,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:54,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 187 [2022-11-18 18:36:54,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:54,863 INFO L130 PetriNetUnfolder]: 403/1234 cut-off events. [2022-11-18 18:36:54,864 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-18 18:36:54,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1234 events. 403/1234 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7472 event pairs, 141 based on Foata normal form. 438/1465 useless extension candidates. Maximal degree in co-relation 1943. Up to 319 conditions per place. [2022-11-18 18:36:54,878 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 26 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-18 18:36:54,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 165 transitions, 413 flow [2022-11-18 18:36:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:36:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-18 18:36:54,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8983957219251337 [2022-11-18 18:36:54,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-18 18:36:54,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-18 18:36:54,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:54,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-18 18:36:54,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 18:36:54,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 18:36:54,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 18:36:54,887 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 359 flow. Second operand 3 states and 504 transitions. [2022-11-18 18:36:54,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 165 transitions, 413 flow [2022-11-18 18:36:54,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 165 transitions, 410 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:36:54,891 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 348 flow [2022-11-18 18:36:54,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2022-11-18 18:36:54,892 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -15 predicate places. [2022-11-18 18:36:54,893 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 348 flow [2022-11-18 18:36:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 18:36:54,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:54,893 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 18:36:54,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:36:54,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 18:36:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash 994363400, now seen corresponding path program 1 times [2022-11-18 18:36:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:54,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488081910] [2022-11-18 18:36:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:54,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:54,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:36:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:54,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:36:54,936 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:36:54,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2022-11-18 18:36:54,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2022-11-18 18:36:54,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2022-11-18 18:36:54,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2022-11-18 18:36:54,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2022-11-18 18:36:54,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2022-11-18 18:36:54,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2022-11-18 18:36:54,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2022-11-18 18:36:54,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2022-11-18 18:36:54,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2022-11-18 18:36:54,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2022-11-18 18:36:54,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2022-11-18 18:36:54,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2022-11-18 18:36:54,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2022-11-18 18:36:54,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2022-11-18 18:36:54,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2022-11-18 18:36:54,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2022-11-18 18:36:54,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2022-11-18 18:36:54,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2022-11-18 18:36:54,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2022-11-18 18:36:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:36:54,940 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:36:54,941 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:36:54,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:36:54,989 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:36:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 263 transitions, 568 flow [2022-11-18 18:36:55,054 INFO L130 PetriNetUnfolder]: 13/271 cut-off events. [2022-11-18 18:36:55,054 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 18:36:55,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 271 events. 13/271 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 757 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2022-11-18 18:36:55,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 263 transitions, 568 flow [2022-11-18 18:36:55,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 234 transitions, 492 flow [2022-11-18 18:36:55,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:36:55,063 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;@7f1e0eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:36:55,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 18:36:55,067 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-11-18 18:36:55,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:36:55,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:55,068 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] [2022-11-18 18:36:55,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:36:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1062142643, now seen corresponding path program 1 times [2022-11-18 18:36:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:55,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854677226] [2022-11-18 18:36:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:55,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:55,116 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 18:36:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:55,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854677226] [2022-11-18 18:36:55,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854677226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:55,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:55,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790579383] [2022-11-18 18:36:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:55,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 263 [2022-11-18 18:36:55,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 234 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 18:36:55,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:55,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 263 [2022-11-18 18:36:55,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:57,472 INFO L130 PetriNetUnfolder]: 3839/9689 cut-off events. [2022-11-18 18:36:57,472 INFO L131 PetriNetUnfolder]: For 1342/1342 co-relation queries the response was YES. [2022-11-18 18:36:57,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15908 conditions, 9689 events. 3839/9689 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 86608 event pairs, 1631 based on Foata normal form. 2751/10654 useless extension candidates. Maximal degree in co-relation 15880. Up to 2957 conditions per place. [2022-11-18 18:36:57,618 INFO L137 encePairwiseOnDemand]: 240/263 looper letters, 37 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-18 18:36:57,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 229 transitions, 581 flow [2022-11-18 18:36:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:36:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:36:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2022-11-18 18:36:57,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846641318124208 [2022-11-18 18:36:57,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2022-11-18 18:36:57,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2022-11-18 18:36:57,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:57,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2022-11-18 18:36:57,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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 18:36:57,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 18:36:57,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 18:36:57,633 INFO L175 Difference]: Start difference. First operand has 234 places, 234 transitions, 492 flow. Second operand 3 states and 698 transitions. [2022-11-18 18:36:57,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 229 transitions, 581 flow [2022-11-18 18:36:57,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 229 transitions, 572 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:36:57,645 INFO L231 Difference]: Finished difference. Result has 215 places, 214 transitions, 477 flow [2022-11-18 18:36:57,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=215, PETRI_TRANSITIONS=214} [2022-11-18 18:36:57,648 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, -19 predicate places. [2022-11-18 18:36:57,648 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 214 transitions, 477 flow [2022-11-18 18:36:57,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 18:36:57,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:57,649 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 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 18:36:57,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:36:57,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:36:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1848669760, now seen corresponding path program 1 times [2022-11-18 18:36:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:57,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418978503] [2022-11-18 18:36:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:57,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:36:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:36:57,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:36:57,694 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:36:57,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-18 18:36:57,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2022-11-18 18:36:57,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2022-11-18 18:36:57,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2022-11-18 18:36:57,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2022-11-18 18:36:57,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2022-11-18 18:36:57,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2022-11-18 18:36:57,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2022-11-18 18:36:57,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2022-11-18 18:36:57,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2022-11-18 18:36:57,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2022-11-18 18:36:57,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2022-11-18 18:36:57,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2022-11-18 18:36:57,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2022-11-18 18:36:57,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2022-11-18 18:36:57,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2022-11-18 18:36:57,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2022-11-18 18:36:57,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2022-11-18 18:36:57,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2022-11-18 18:36:57,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2022-11-18 18:36:57,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2022-11-18 18:36:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:36:57,699 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:36:57,700 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:36:57,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 18:36:57,761 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:36:57,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 339 transitions, 742 flow [2022-11-18 18:36:57,836 INFO L130 PetriNetUnfolder]: 16/346 cut-off events. [2022-11-18 18:36:57,836 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 18:36:57,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 346 events. 16/346 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1144 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 366. Up to 10 conditions per place. [2022-11-18 18:36:57,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 339 transitions, 742 flow [2022-11-18 18:36:57,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 296 transitions, 627 flow [2022-11-18 18:36:57,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:36:57,848 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;@7f1e0eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:36:57,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-18 18:36:57,851 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-11-18 18:36:57,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:36:57,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:57,851 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] [2022-11-18 18:36:57,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 18:36:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -888383221, now seen corresponding path program 1 times [2022-11-18 18:36:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:57,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55857661] [2022-11-18 18:36:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:57,880 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 18:36:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:57,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55857661] [2022-11-18 18:36:57,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55857661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:57,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:57,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:36:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050770397] [2022-11-18 18:36:57,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:57,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:36:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:36:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:36:57,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 339 [2022-11-18 18:36:57,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 296 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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 18:36:57,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:57,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 339 [2022-11-18 18:36:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:09,152 INFO L130 PetriNetUnfolder]: 30892/57001 cut-off events. [2022-11-18 18:37:09,153 INFO L131 PetriNetUnfolder]: For 14044/14044 co-relation queries the response was YES. [2022-11-18 18:37:09,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104289 conditions, 57001 events. 30892/57001 cut-off events. For 14044/14044 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 562074 event pairs, 15561 based on Foata normal form. 16950/62001 useless extension candidates. Maximal degree in co-relation 104260. Up to 23893 conditions per place. [2022-11-18 18:37:10,585 INFO L137 encePairwiseOnDemand]: 311/339 looper letters, 48 selfloop transitions, 6 changer transitions 0/293 dead transitions. [2022-11-18 18:37:10,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 293 transitions, 753 flow [2022-11-18 18:37:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:37:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:37:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2022-11-18 18:37:10,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770894788593904 [2022-11-18 18:37:10,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2022-11-18 18:37:10,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2022-11-18 18:37:10,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:10,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2022-11-18 18:37:10,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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 18:37:10,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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 18:37:10,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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 18:37:10,596 INFO L175 Difference]: Start difference. First operand has 296 places, 296 transitions, 627 flow. Second operand 3 states and 892 transitions. [2022-11-18 18:37:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 293 transitions, 753 flow [2022-11-18 18:37:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 293 transitions, 734 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-18 18:37:10,607 INFO L231 Difference]: Finished difference. Result has 273 places, 273 transitions, 606 flow [2022-11-18 18:37:10,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=273, PETRI_TRANSITIONS=273} [2022-11-18 18:37:10,610 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -23 predicate places. [2022-11-18 18:37:10,611 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 273 transitions, 606 flow [2022-11-18 18:37:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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 18:37:10,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:10,612 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 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 18:37:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:37:10,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-18 18:37:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1080485669, now seen corresponding path program 1 times [2022-11-18 18:37:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:10,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429228725] [2022-11-18 18:37:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:37:10,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:37:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:37:10,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:37:10,695 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:37:10,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2022-11-18 18:37:10,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2022-11-18 18:37:10,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2022-11-18 18:37:10,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2022-11-18 18:37:10,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2022-11-18 18:37:10,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2022-11-18 18:37:10,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2022-11-18 18:37:10,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2022-11-18 18:37:10,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2022-11-18 18:37:10,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2022-11-18 18:37:10,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2022-11-18 18:37:10,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2022-11-18 18:37:10,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2022-11-18 18:37:10,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2022-11-18 18:37:10,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2022-11-18 18:37:10,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2022-11-18 18:37:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2022-11-18 18:37:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2022-11-18 18:37:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2022-11-18 18:37:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2022-11-18 18:37:10,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2022-11-18 18:37:10,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2022-11-18 18:37:10,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2022-11-18 18:37:10,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2022-11-18 18:37:10,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2022-11-18 18:37:10,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2022-11-18 18:37:10,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2022-11-18 18:37:10,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2022-11-18 18:37:10,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2022-11-18 18:37:10,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2022-11-18 18:37:10,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2022-11-18 18:37:10,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2022-11-18 18:37:10,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:37:10,708 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:37:10,709 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:37:10,709 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 18:37:10,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:37:10,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 415 transitions, 920 flow [2022-11-18 18:37:10,892 INFO L130 PetriNetUnfolder]: 19/421 cut-off events. [2022-11-18 18:37:10,893 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:37:10,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 421 events. 19/421 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1580 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 448. Up to 12 conditions per place. [2022-11-18 18:37:10,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 415 transitions, 920 flow [2022-11-18 18:37:10,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 358 transitions, 764 flow [2022-11-18 18:37:10,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:37:10,913 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;@7f1e0eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:37:10,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 18:37:10,918 INFO L130 PetriNetUnfolder]: 2/30 cut-off events. [2022-11-18 18:37:10,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:37:10,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:10,918 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] [2022-11-18 18:37:10,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-18 18:37:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1118743253, now seen corresponding path program 1 times [2022-11-18 18:37:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:10,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577400816] [2022-11-18 18:37:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:10,970 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 18:37:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577400816] [2022-11-18 18:37:10,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577400816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:10,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:10,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:37:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043206695] [2022-11-18 18:37:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:10,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:37:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:37:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:37:10,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 415 [2022-11-18 18:37:10,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 358 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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 18:37:10,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:10,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 415 [2022-11-18 18:37:10,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand