./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/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 adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --- 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 18:45:49,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:45:49,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:45:49,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:45:49,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:45:49,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:45:49,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:45:49,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:45:49,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:45:49,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:45:49,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:45:49,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:45:49,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:45:49,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:45:49,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:45:49,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:45:49,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:45:49,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:45:49,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:45:49,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:45:49,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:45:49,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:45:49,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:45:49,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:45:49,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:45:49,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:45:49,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:45:49,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:45:49,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:45:49,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:45:49,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:45:49,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:45:49,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:45:49,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:45:49,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:45:49,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:45:49,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:45:49,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:45:49,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:45:49,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:45:49,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:45:49,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:45:49,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:45:49,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:45:49,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:45:49,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:45:49,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:45:49,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:45:49,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:45:49,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:45:49,683 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:45:49,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:45:49,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:45:49,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:45:49,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:45:49,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:45:49,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:45:49,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:45:49,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:45:49,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:45:49,687 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:45:49,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:45:49,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:45:49,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:45:49,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:45:49,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:45:49,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:45:49,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:45:49,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:45:49,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:45:49,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:45:49,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:45:49,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:45:49,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:45:49,694 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:45:49,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:45:49,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:45:49,695 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 [2022-11-18 18:45:50,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:45:50,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:45:50,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:45:50,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:45:50,155 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:45:50,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-18 18:45:50,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/data/4c5c00cab/04d696d1eadb46c88663de1f8dea5f6e/FLAG789f68292 [2022-11-18 18:45:50,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:45:50,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-18 18:45:51,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/data/4c5c00cab/04d696d1eadb46c88663de1f8dea5f6e/FLAG789f68292 [2022-11-18 18:45:51,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/data/4c5c00cab/04d696d1eadb46c88663de1f8dea5f6e [2022-11-18 18:45:51,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:45:51,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:45:51,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:45:51,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:45:51,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:45:51,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:45:51" (1/1) ... [2022-11-18 18:45:51,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2242f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:51, skipping insertion in model container [2022-11-18 18:45:51,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:45:51" (1/1) ... [2022-11-18 18:45:51,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:45:51,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:45:51,822 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-18 18:45:51,830 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-18 18:45:51,837 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-18 18:45:51,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:45:51,867 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:45:51,944 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-18 18:45:51,960 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-18 18:45:51,968 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_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-18 18:45:51,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:45:52,031 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:45:52,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52 WrapperNode [2022-11-18 18:45:52,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:45:52,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:45:52,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:45:52,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:45:52,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,140 INFO L138 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 213 [2022-11-18 18:45:52,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:45:52,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:45:52,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:45:52,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:45:52,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:45:52,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:45:52,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:45:52,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:45:52,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (1/1) ... [2022-11-18 18:45:52,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:45:52,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:52,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:45:52,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d5a644-fe9c-406b-9d81-be0e2daef8ac/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:45:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:45:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 18:45:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 18:45:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:45:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:45:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:45:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:45:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:45:52,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:45:52,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:45:52,347 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 18:45:52,558 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:45:52,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:45:53,222 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:45:53,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:45:53,606 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:45:53,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:45:53 BoogieIcfgContainer [2022-11-18 18:45:53,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:45:53,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:45:53,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:45:53,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:45:53,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:45:51" (1/3) ... [2022-11-18 18:45:53,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605da415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:45:53, skipping insertion in model container [2022-11-18 18:45:53,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:45:52" (2/3) ... [2022-11-18 18:45:53,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605da415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:45:53, skipping insertion in model container [2022-11-18 18:45:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:45:53" (3/3) ... [2022-11-18 18:45:53,622 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2022-11-18 18:45:53,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:45:53,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:45:53,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:45:53,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:45:53,841 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:45:53,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 170 transitions, 345 flow [2022-11-18 18:45:54,020 INFO L130 PetriNetUnfolder]: 14/181 cut-off events. [2022-11-18 18:45:54,021 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:45:54,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 14/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2022-11-18 18:45:54,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 170 transitions, 345 flow [2022-11-18 18:45:54,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 170 transitions, 345 flow [2022-11-18 18:45:54,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:45:54,070 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;@541bbc56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:45:54,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-18 18:45:54,096 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-11-18 18:45:54,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:45:54,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:54,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:54,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:45:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -603134859, now seen corresponding path program 1 times [2022-11-18 18:45:54,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:54,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065198244] [2022-11-18 18:45:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:54,324 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 18:45:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:54,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065198244] [2022-11-18 18:45:54,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065198244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:54,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:54,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:45:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837618185] [2022-11-18 18:45:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:45:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:45:54,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:45:54,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 170 [2022-11-18 18:45:54,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 170 transitions, 345 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 18:45:54,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:54,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 170 [2022-11-18 18:45:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:54,551 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-11-18 18:45:54,551 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:45:54,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 145 events. 4/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 122 event pairs, 0 based on Foata normal form. 11/143 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-11-18 18:45:54,554 INFO L137 encePairwiseOnDemand]: 150/170 looper letters, 5 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2022-11-18 18:45:54,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 297 flow [2022-11-18 18:45:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:45:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:45:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2022-11-18 18:45:54,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9088235294117647 [2022-11-18 18:45:54,581 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2022-11-18 18:45:54,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2022-11-18 18:45:54,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:54,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2022-11-18 18:45:54,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 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 18:45:54,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 18:45:54,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 18:45:54,612 INFO L175 Difference]: Start difference. First operand has 160 places, 170 transitions, 345 flow. Second operand 2 states and 309 transitions. [2022-11-18 18:45:54,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 297 flow [2022-11-18 18:45:54,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 297 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:45:54,631 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 287 flow [2022-11-18 18:45:54,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=287, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2022-11-18 18:45:54,638 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, -19 predicate places. [2022-11-18 18:45:54,639 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 287 flow [2022-11-18 18:45:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 18:45:54,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:54,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:45:54,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:45:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 208007480, now seen corresponding path program 1 times [2022-11-18 18:45:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:54,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538387811] [2022-11-18 18:45:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:54,848 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 18:45:54,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:54,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538387811] [2022-11-18 18:45:54,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538387811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:54,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:54,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84374954] [2022-11-18 18:45:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:54,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:54,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 170 [2022-11-18 18:45:54,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 18:45:54,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:54,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 170 [2022-11-18 18:45:54,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:54,987 INFO L130 PetriNetUnfolder]: 4/144 cut-off events. [2022-11-18 18:45:54,987 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:45:54,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 144 events. 4/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 157. Up to 7 conditions per place. [2022-11-18 18:45:54,989 INFO L137 encePairwiseOnDemand]: 167/170 looper letters, 8 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-11-18 18:45:54,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 305 flow [2022-11-18 18:45:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:45:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:45:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2022-11-18 18:45:54,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8215686274509804 [2022-11-18 18:45:54,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2022-11-18 18:45:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2022-11-18 18:45:54,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:54,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2022-11-18 18:45:54,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 18:45:54,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 18:45:54,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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 18:45:54,999 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 287 flow. Second operand 3 states and 419 transitions. [2022-11-18 18:45:54,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 305 flow [2022-11-18 18:45:55,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:45:55,003 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 289 flow [2022-11-18 18:45:55,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2022-11-18 18:45:55,004 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, -18 predicate places. [2022-11-18 18:45:55,005 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 289 flow [2022-11-18 18:45:55,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 18:45:55,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:55,006 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] [2022-11-18 18:45:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:45:55,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:45:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1483324813, now seen corresponding path program 1 times [2022-11-18 18:45:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:55,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157954060] [2022-11-18 18:45:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:45:55,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:45:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:45:55,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:45:55,104 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:45:55,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-11-18 18:45:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-11-18 18:45:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-11-18 18:45:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-11-18 18:45:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-11-18 18:45:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-11-18 18:45:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-11-18 18:45:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-11-18 18:45:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-11-18 18:45:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-11-18 18:45:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-11-18 18:45:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-11-18 18:45:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-11-18 18:45:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-11-18 18:45:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-11-18 18:45:55,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-11-18 18:45:55,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-11-18 18:45:55,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-11-18 18:45:55,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-11-18 18:45:55,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-11-18 18:45:55,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-11-18 18:45:55,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-11-18 18:45:55,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-11-18 18:45:55,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-11-18 18:45:55,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-11-18 18:45:55,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-11-18 18:45:55,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-11-18 18:45:55,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-11-18 18:45:55,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-11-18 18:45:55,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-11-18 18:45:55,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-11-18 18:45:55,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-11-18 18:45:55,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-11-18 18:45:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:45:55,126 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 18:45:55,130 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:45:55,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:45:55,260 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:45:55,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 308 transitions, 628 flow [2022-11-18 18:45:55,442 INFO L130 PetriNetUnfolder]: 27/332 cut-off events. [2022-11-18 18:45:55,442 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:45:55,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 332 events. 27/332 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1063 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 287. Up to 6 conditions per place. [2022-11-18 18:45:55,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 308 transitions, 628 flow [2022-11-18 18:45:55,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 308 transitions, 628 flow [2022-11-18 18:45:55,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:45:55,456 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;@541bbc56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:45:55,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-18 18:45:55,462 INFO L130 PetriNetUnfolder]: 1/32 cut-off events. [2022-11-18 18:45:55,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:45:55,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:55,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:55,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-18 18:45:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1429853422, now seen corresponding path program 1 times [2022-11-18 18:45:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:55,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358419946] [2022-11-18 18:45:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:55,505 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 18:45:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:55,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358419946] [2022-11-18 18:45:55,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358419946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:55,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:55,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:45:55,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679900452] [2022-11-18 18:45:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:45:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:45:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:45:55,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 308 [2022-11-18 18:45:55,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 308 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 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 18:45:55,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:55,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 308 [2022-11-18 18:45:55,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:55,980 INFO L130 PetriNetUnfolder]: 48/857 cut-off events. [2022-11-18 18:45:55,983 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 18:45:56,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 857 events. 48/857 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4600 event pairs, 20 based on Foata normal form. 82/841 useless extension candidates. Maximal degree in co-relation 748. Up to 51 conditions per place. [2022-11-18 18:45:56,029 INFO L137 encePairwiseOnDemand]: 270/308 looper letters, 10 selfloop transitions, 0 changer transitions 0/257 dead transitions. [2022-11-18 18:45:56,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 546 flow [2022-11-18 18:45:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:45:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:45:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 556 transitions. [2022-11-18 18:45:56,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025974025974026 [2022-11-18 18:45:56,037 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 556 transitions. [2022-11-18 18:45:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 556 transitions. [2022-11-18 18:45:56,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:56,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 556 transitions. [2022-11-18 18:45:56,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 278.0) internal successors, (556), 2 states have internal predecessors, (556), 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 18:45:56,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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 18:45:56,054 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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 18:45:56,054 INFO L175 Difference]: Start difference. First operand has 288 places, 308 transitions, 628 flow. Second operand 2 states and 556 transitions. [2022-11-18 18:45:56,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 546 flow [2022-11-18 18:45:56,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 257 transitions, 544 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 18:45:56,064 INFO L231 Difference]: Finished difference. Result has 255 places, 257 transitions, 524 flow [2022-11-18 18:45:56,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=524, PETRI_PLACES=255, PETRI_TRANSITIONS=257} [2022-11-18 18:45:56,066 INFO L288 CegarLoopForPetriNet]: 288 programPoint places, -33 predicate places. [2022-11-18 18:45:56,066 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 257 transitions, 524 flow [2022-11-18 18:45:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 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 18:45:56,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:56,068 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, 1, 1, 1, 1] [2022-11-18 18:45:56,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:45:56,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-18 18:45:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 300432437, now seen corresponding path program 1 times [2022-11-18 18:45:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59820675] [2022-11-18 18:45:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:45:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:56,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59820675] [2022-11-18 18:45:56,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59820675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:56,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:56,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787250379] [2022-11-18 18:45:56,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:56,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:56,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:56,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 308 [2022-11-18 18:45:56,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 257 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 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 18:45:56,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:56,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 308 [2022-11-18 18:45:56,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:56,960 INFO L130 PetriNetUnfolder]: 189/2090 cut-off events. [2022-11-18 18:45:56,960 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-18 18:45:56,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 2090 events. 189/2090 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16399 event pairs, 48 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 2393. Up to 143 conditions per place. [2022-11-18 18:45:56,979 INFO L137 encePairwiseOnDemand]: 300/308 looper letters, 35 selfloop transitions, 6 changer transitions 0/276 dead transitions. [2022-11-18 18:45:56,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 276 transitions, 649 flow [2022-11-18 18:45:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:45:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:45:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2022-11-18 18:45:56,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8322510822510822 [2022-11-18 18:45:56,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2022-11-18 18:45:56,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2022-11-18 18:45:56,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:56,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2022-11-18 18:45:56,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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 18:45:56,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 18:45:56,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 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 18:45:56,992 INFO L175 Difference]: Start difference. First operand has 255 places, 257 transitions, 524 flow. Second operand 3 states and 769 transitions. [2022-11-18 18:45:56,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 276 transitions, 649 flow [2022-11-18 18:45:56,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 276 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:45:57,000 INFO L231 Difference]: Finished difference. Result has 259 places, 263 transitions, 576 flow [2022-11-18 18:45:57,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=259, PETRI_TRANSITIONS=263} [2022-11-18 18:45:57,002 INFO L288 CegarLoopForPetriNet]: 288 programPoint places, -29 predicate places. [2022-11-18 18:45:57,003 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 263 transitions, 576 flow [2022-11-18 18:45:57,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 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 18:45:57,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:57,004 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] [2022-11-18 18:45:57,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:45:57,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-18 18:45:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1108970479, now seen corresponding path program 1 times [2022-11-18 18:45:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:57,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256762047] [2022-11-18 18:45:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:45:57,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:45:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:45:57,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:45:57,046 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:45:57,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-11-18 18:45:57,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-11-18 18:45:57,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-11-18 18:45:57,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-11-18 18:45:57,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-11-18 18:45:57,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-11-18 18:45:57,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-11-18 18:45:57,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-11-18 18:45:57,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-11-18 18:45:57,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-11-18 18:45:57,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-11-18 18:45:57,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-11-18 18:45:57,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-11-18 18:45:57,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-11-18 18:45:57,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-11-18 18:45:57,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-11-18 18:45:57,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-11-18 18:45:57,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-11-18 18:45:57,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-11-18 18:45:57,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-11-18 18:45:57,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-11-18 18:45:57,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-11-18 18:45:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-11-18 18:45:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-11-18 18:45:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-11-18 18:45:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-11-18 18:45:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-11-18 18:45:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-11-18 18:45:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-11-18 18:45:57,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-11-18 18:45:57,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-11-18 18:45:57,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-11-18 18:45:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-11-18 18:45:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-11-18 18:45:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-11-18 18:45:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-11-18 18:45:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-11-18 18:45:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-11-18 18:45:57,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-11-18 18:45:57,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-11-18 18:45:57,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-11-18 18:45:57,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-11-18 18:45:57,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-11-18 18:45:57,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-11-18 18:45:57,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-11-18 18:45:57,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-11-18 18:45:57,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-11-18 18:45:57,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-11-18 18:45:57,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-11-18 18:45:57,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:45:57,062 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 18:45:57,063 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:45:57,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:45:57,207 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:45:57,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 446 transitions, 913 flow [2022-11-18 18:45:57,368 INFO L130 PetriNetUnfolder]: 40/483 cut-off events. [2022-11-18 18:45:57,369 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 18:45:57,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 483 events. 40/483 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1968 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 424. Up to 8 conditions per place. [2022-11-18 18:45:57,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 446 transitions, 913 flow [2022-11-18 18:45:57,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 446 transitions, 913 flow [2022-11-18 18:45:57,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:45:57,399 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;@541bbc56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:45:57,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-11-18 18:45:57,408 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-11-18 18:45:57,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:45:57,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:57,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:57,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-18 18:45:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash -395898343, now seen corresponding path program 1 times [2022-11-18 18:45:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666176639] [2022-11-18 18:45:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:57,458 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 18:45:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:57,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666176639] [2022-11-18 18:45:57,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666176639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:57,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:57,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 18:45:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982317463] [2022-11-18 18:45:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:57,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:45:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:45:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:45:57,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 446 [2022-11-18 18:45:57,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 446 transitions, 913 flow. Second operand has 2 states, 2 states have (on average 367.0) internal successors, (734), 2 states have internal predecessors, (734), 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 18:45:57,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:57,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 446 [2022-11-18 18:45:57,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:59,202 INFO L130 PetriNetUnfolder]: 372/4599 cut-off events. [2022-11-18 18:45:59,202 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-11-18 18:45:59,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 4599 events. 372/4599 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 43841 event pairs, 220 based on Foata normal form. 541/4581 useless extension candidates. Maximal degree in co-relation 4019. Up to 376 conditions per place. [2022-11-18 18:45:59,277 INFO L137 encePairwiseOnDemand]: 390/446 looper letters, 15 selfloop transitions, 0 changer transitions 0/373 dead transitions. [2022-11-18 18:45:59,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 373 transitions, 797 flow [2022-11-18 18:45:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:45:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:45:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 803 transitions. [2022-11-18 18:45:59,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9002242152466368 [2022-11-18 18:45:59,283 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 803 transitions. [2022-11-18 18:45:59,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 803 transitions. [2022-11-18 18:45:59,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:59,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 803 transitions. [2022-11-18 18:45:59,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 401.5) internal successors, (803), 2 states have internal predecessors, (803), 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 18:45:59,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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 18:45:59,290 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 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 18:45:59,290 INFO L175 Difference]: Start difference. First operand has 416 places, 446 transitions, 913 flow. Second operand 2 states and 803 transitions. [2022-11-18 18:45:59,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 373 transitions, 797 flow [2022-11-18 18:45:59,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 373 transitions, 791 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-18 18:45:59,301 INFO L231 Difference]: Finished difference. Result has 369 places, 373 transitions, 761 flow [2022-11-18 18:45:59,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=761, PETRI_PLACES=369, PETRI_TRANSITIONS=373} [2022-11-18 18:45:59,305 INFO L288 CegarLoopForPetriNet]: 416 programPoint places, -47 predicate places. [2022-11-18 18:45:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 373 transitions, 761 flow [2022-11-18 18:45:59,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 367.0) internal successors, (734), 2 states have internal predecessors, (734), 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 18:45:59,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:59,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:45:59,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-18 18:45:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1793832252, now seen corresponding path program 1 times [2022-11-18 18:45:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:59,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963592499] [2022-11-18 18:45:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:59,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:59,364 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 18:45:59,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963592499] [2022-11-18 18:45:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963592499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:59,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:59,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356247593] [2022-11-18 18:45:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:59,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:59,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 446 [2022-11-18 18:45:59,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 373 transitions, 761 flow. Second operand has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 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 18:45:59,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:59,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 446 [2022-11-18 18:45:59,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:46:05,900 INFO L130 PetriNetUnfolder]: 4300/30223 cut-off events. [2022-11-18 18:46:05,900 INFO L131 PetriNetUnfolder]: For 451/451 co-relation queries the response was YES. [2022-11-18 18:46:06,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36048 conditions, 30223 events. 4300/30223 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 426322 event pairs, 1221 based on Foata normal form. 0/26399 useless extension candidates. Maximal degree in co-relation 36042. Up to 2724 conditions per place. [2022-11-18 18:46:06,233 INFO L137 encePairwiseOnDemand]: 434/446 looper letters, 53 selfloop transitions, 9 changer transitions 0/402 dead transitions. [2022-11-18 18:46:06,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 402 transitions, 953 flow [2022-11-18 18:46:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:46:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1109 transitions. [2022-11-18 18:46:06,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288490284005979 [2022-11-18 18:46:06,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1109 transitions. [2022-11-18 18:46:06,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1109 transitions. [2022-11-18 18:46:06,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:46:06,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1109 transitions. [2022-11-18 18:46:06,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 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 18:46:06,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 18:46:06,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 18:46:06,250 INFO L175 Difference]: Start difference. First operand has 369 places, 373 transitions, 761 flow. Second operand 3 states and 1109 transitions. [2022-11-18 18:46:06,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 402 transitions, 953 flow [2022-11-18 18:46:06,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 402 transitions, 953 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:46:06,260 INFO L231 Difference]: Finished difference. Result has 373 places, 382 transitions, 839 flow [2022-11-18 18:46:06,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=839, PETRI_PLACES=373, PETRI_TRANSITIONS=382} [2022-11-18 18:46:06,262 INFO L288 CegarLoopForPetriNet]: 416 programPoint places, -43 predicate places. [2022-11-18 18:46:06,262 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 382 transitions, 839 flow [2022-11-18 18:46:06,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 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 18:46:06,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:46:06,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:06,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:46:06,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-18 18:46:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash -564239325, now seen corresponding path program 1 times [2022-11-18 18:46:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:06,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996397824] [2022-11-18 18:46:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:06,841 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 18:46:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:06,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996397824] [2022-11-18 18:46:06,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996397824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:06,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:06,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:46:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400300162] [2022-11-18 18:46:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:06,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:46:06,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:46:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:46:06,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 446 [2022-11-18 18:46:06,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 382 transitions, 839 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 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 18:46:06,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:46:06,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 446 [2022-11-18 18:46:06,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand