./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8 --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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- 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-2329fc7 [2022-12-13 15:11:58,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:11:58,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:11:58,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:11:58,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:11:58,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:11:58,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:11:58,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:11:58,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:11:58,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:11:58,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:11:58,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:11:58,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:11:58,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:11:58,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:11:58,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:11:58,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:11:58,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:11:58,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:11:58,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:11:58,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:11:58,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:11:58,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:11:58,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:11:58,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:11:58,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:11:58,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:11:58,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:11:58,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:11:58,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:11:58,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:11:58,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:11:58,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:11:58,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:11:58,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:11:58,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:11:58,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:11:58,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:11:58,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:11:58,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:11:58,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:11:58,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 15:11:58,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:11:58,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:11:58,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:11:58,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:11:58,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:11:58,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:11:58,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:11:58,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:11:58,302 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:11:58,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:11:58,303 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:11:58,303 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:11:58,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:11:58,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:11:58,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:11:58,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:11:58,305 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:11:58,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:11:58,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:11:58,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:11:58,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:11:58,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:11:58,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:11:58,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:11:58,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:11:58,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:11:58,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:11:58,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:11:58,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:11:58,307 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:11:58,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:11:58,307 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:11:58,308 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2022-12-13 15:11:58,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:11:58,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:11:58,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:11:58,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:11:58,493 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:11:58,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2022-12-13 15:12:01,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:12:01,193 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:12:01,194 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2022-12-13 15:12:01,202 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/data/e4207f5cf/a00734edb34d4684a399fa3ca2a29980/FLAG16559de18 [2022-12-13 15:12:01,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/data/e4207f5cf/a00734edb34d4684a399fa3ca2a29980 [2022-12-13 15:12:01,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:12:01,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:12:01,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:12:01,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:12:01,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:12:01,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7368c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01, skipping insertion in model container [2022-12-13 15:12:01,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:12:01,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:12:01,394 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:12:01,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,481 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i[30494,30507] [2022-12-13 15:12:01,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:12:01,493 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:12:01,503 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:12:01,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i[30494,30507] [2022-12-13 15:12:01,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:12:01,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:12:01,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:12:01,540 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:12:01,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01 WrapperNode [2022-12-13 15:12:01,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:12:01,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:12:01,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:12:01,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:12:01,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,567 INFO L138 Inliner]: procedures = 170, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-12-13 15:12:01,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:12:01,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:12:01,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:12:01,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:12:01,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:12:01,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:12:01,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:12:01,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:12:01,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:12:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:01,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:12:01,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50c6d384-ac6e-430f-a5de-9d23417a486a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:12:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 15:12:01,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:12:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:12:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:12:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:12:01,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:12:01,644 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:12:01,749 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:12:01,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:12:01,842 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:12:01,893 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:12:01,894 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:12:01,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:12:01 BoogieIcfgContainer [2022-12-13 15:12:01,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:12:01,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:12:01,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:12:01,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:12:01,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:12:01" (1/3) ... [2022-12-13 15:12:01,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942d602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:12:01, skipping insertion in model container [2022-12-13 15:12:01,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01" (2/3) ... [2022-12-13 15:12:01,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942d602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:12:01, skipping insertion in model container [2022-12-13 15:12:01,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:12:01" (3/3) ... [2022-12-13 15:12:01,906 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2022-12-13 15:12:01,914 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:12:01,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:12:01,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-13 15:12:01,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:12:01,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:01,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,012 INFO L130 PetriNetUnfolder]: 2/52 cut-off events. [2022-12-13 15:12:02,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:02,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2022-12-13 15:12:02,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:02,034 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 41 transitions, 87 flow [2022-12-13 15:12:02,047 INFO L130 PetriNetUnfolder]: 2/52 cut-off events. [2022-12-13 15:12:02,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:02,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2022-12-13 15:12:02,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2022-12-13 15:12:02,984 INFO L134 LiptonReduction]: Checked pairs total: 315 [2022-12-13 15:12:02,984 INFO L136 LiptonReduction]: Total number of compositions: 37 [2022-12-13 15:12:02,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:03,000 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:03,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 15:12:03,008 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:12:03,008 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:03,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:03,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:03,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 15:12:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash 7132064, now seen corresponding path program 1 times [2022-12-13 15:12:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:03,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182410256] [2022-12-13 15:12:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182410256] [2022-12-13 15:12:03,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182410256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:03,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:03,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294673645] [2022-12-13 15:12:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:03,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:03,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2022-12-13 15:12:03,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-12-13 15:12:03,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:03,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2022-12-13 15:12:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:03,208 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-12-13 15:12:03,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:03,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2022-12-13 15:12:03,210 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2022-12-13 15:12:03,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2022-12-13 15:12:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2022-12-13 15:12:03,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2022-12-13 15:12:03,223 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 71 transitions. [2022-12-13 15:12:03,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 71 transitions. [2022-12-13 15:12:03,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:03,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 71 transitions. [2022-12-13 15:12:03,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-12-13 15:12:03,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-12-13 15:12:03,233 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-12-13 15:12:03,235 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 29 flow. Second operand 2 states and 71 transitions. [2022-12-13 15:12:03,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2022-12-13 15:12:03,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:03,240 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2022-12-13 15:12:03,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2022-12-13 15:12:03,245 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, -5 predicate places. [2022-12-13 15:12:03,245 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2022-12-13 15:12:03,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-12-13 15:12:03,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:03,246 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 15:12:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:12:03,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 15:12:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1736005331, now seen corresponding path program 1 times [2022-12-13 15:12:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993753134] [2022-12-13 15:12:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:03,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:03,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:03,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:03,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 15:12:03,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 15:12:03,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 15:12:03,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 15:12:03,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 15:12:03,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 15:12:03,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 15:12:03,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 15:12:03,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 15:12:03,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 15:12:03,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 15:12:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:12:03,309 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:03,312 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:03,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 15:12:03,327 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:03,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,347 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-12-13 15:12:03,347 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:12:03,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2022-12-13 15:12:03,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:03,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,351 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 118 flow [2022-12-13 15:12:03,365 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-12-13 15:12:03,365 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:12:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2022-12-13 15:12:03,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 880 [2022-12-13 15:12:04,151 INFO L134 LiptonReduction]: Checked pairs total: 2310 [2022-12-13 15:12:04,151 INFO L136 LiptonReduction]: Total number of compositions: 34 [2022-12-13 15:12:04,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:04,154 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:04,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-13 15:12:04,157 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 15:12:04,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:04,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:04,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:04,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-12-13 15:12:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 10152840, now seen corresponding path program 1 times [2022-12-13 15:12:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:04,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940699335] [2022-12-13 15:12:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:04,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940699335] [2022-12-13 15:12:04,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940699335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:04,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:04,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:04,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760853605] [2022-12-13 15:12:04,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:04,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 87 [2022-12-13 15:12:04,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2022-12-13 15:12:04,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:04,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 87 [2022-12-13 15:12:04,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:04,220 INFO L130 PetriNetUnfolder]: 39/95 cut-off events. [2022-12-13 15:12:04,221 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 15:12:04,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 39/95 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 339 event pairs, 39 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 38. Up to 82 conditions per place. [2022-12-13 15:12:04,222 INFO L137 encePairwiseOnDemand]: 76/87 looper letters, 10 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2022-12-13 15:12:04,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2022-12-13 15:12:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2022-12-13 15:12:04,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 15:12:04,224 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 87 transitions. [2022-12-13 15:12:04,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 87 transitions. [2022-12-13 15:12:04,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:04,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 87 transitions. [2022-12-13 15:12:04,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 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) [2022-12-13 15:12:04,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-12-13 15:12:04,227 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-12-13 15:12:04,227 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 87 transitions. [2022-12-13 15:12:04,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2022-12-13 15:12:04,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 56 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:04,228 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 36 flow [2022-12-13 15:12:04,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 15:12:04,229 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2022-12-13 15:12:04,229 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 36 flow [2022-12-13 15:12:04,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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) [2022-12-13 15:12:04,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:04,230 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 15:12:04,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:12:04,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-12-13 15:12:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1709219652, now seen corresponding path program 1 times [2022-12-13 15:12:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:04,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491415025] [2022-12-13 15:12:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:04,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:04,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:04,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:04,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2022-12-13 15:12:04,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2022-12-13 15:12:04,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2022-12-13 15:12:04,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2022-12-13 15:12:04,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2022-12-13 15:12:04,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2022-12-13 15:12:04,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2022-12-13 15:12:04,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2022-12-13 15:12:04,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2022-12-13 15:12:04,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2022-12-13 15:12:04,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2022-12-13 15:12:04,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2022-12-13 15:12:04,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2022-12-13 15:12:04,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2022-12-13 15:12:04,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2022-12-13 15:12:04,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2022-12-13 15:12:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:12:04,271 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:04,271 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:04,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 15:12:04,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:04,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,302 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-12-13 15:12:04,302 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 15:12:04,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 102 events. 4/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-12-13 15:12:04,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,304 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:04,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2022-12-13 15:12:04,317 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-12-13 15:12:04,318 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 15:12:04,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 102 events. 4/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-12-13 15:12:04,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 1716 [2022-12-13 15:12:05,198 INFO L134 LiptonReduction]: Checked pairs total: 5305 [2022-12-13 15:12:05,198 INFO L136 LiptonReduction]: Total number of compositions: 39 [2022-12-13 15:12:05,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:05,201 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:05,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 15:12:05,202 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:12:05,202 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:05,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:05,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:05,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-12-13 15:12:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash 13724565, now seen corresponding path program 1 times [2022-12-13 15:12:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:05,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764377187] [2022-12-13 15:12:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764377187] [2022-12-13 15:12:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764377187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:05,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:05,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225163637] [2022-12-13 15:12:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:05,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:05,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 104 [2022-12-13 15:12:05,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-12-13 15:12:05,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:05,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 104 [2022-12-13 15:12:05,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:05,306 INFO L130 PetriNetUnfolder]: 279/507 cut-off events. [2022-12-13 15:12:05,307 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-13 15:12:05,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 507 events. 279/507 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2346 event pairs, 279 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 207. Up to 450 conditions per place. [2022-12-13 15:12:05,311 INFO L137 encePairwiseOnDemand]: 88/104 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2022-12-13 15:12:05,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 83 flow [2022-12-13 15:12:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 102 transitions. [2022-12-13 15:12:05,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2022-12-13 15:12:05,313 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 102 transitions. [2022-12-13 15:12:05,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 102 transitions. [2022-12-13 15:12:05,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:05,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 102 transitions. [2022-12-13 15:12:05,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2022-12-13 15:12:05,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2022-12-13 15:12:05,315 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2022-12-13 15:12:05,316 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 87 flow. Second operand 2 states and 102 transitions. [2022-12-13 15:12:05,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 83 flow [2022-12-13 15:12:05,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 77 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:05,317 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 49 flow [2022-12-13 15:12:05,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=49, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2022-12-13 15:12:05,318 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -15 predicate places. [2022-12-13 15:12:05,318 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 49 flow [2022-12-13 15:12:05,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-12-13 15:12:05,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:05,319 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 15:12:05,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:12:05,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-12-13 15:12:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1936264979, now seen corresponding path program 1 times [2022-12-13 15:12:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:05,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141653637] [2022-12-13 15:12:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:05,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:05,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:05,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:05,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 15:12:05,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-12-13 15:12:05,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-12-13 15:12:05,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-12-13 15:12:05,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-12-13 15:12:05,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-12-13 15:12:05,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-12-13 15:12:05,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-12-13 15:12:05,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-12-13 15:12:05,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-12-13 15:12:05,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-12-13 15:12:05,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-12-13 15:12:05,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-12-13 15:12:05,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-12-13 15:12:05,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-12-13 15:12:05,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-12-13 15:12:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:12:05,354 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:05,355 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:05,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 15:12:05,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:05,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,383 INFO L130 PetriNetUnfolder]: 5/127 cut-off events. [2022-12-13 15:12:05,383 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 15:12:05,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 127 events. 5/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 110. Up to 10 conditions per place. [2022-12-13 15:12:05,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:05,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 186 flow [2022-12-13 15:12:05,399 INFO L130 PetriNetUnfolder]: 5/127 cut-off events. [2022-12-13 15:12:05,400 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 15:12:05,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 127 events. 5/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 110. Up to 10 conditions per place. [2022-12-13 15:12:05,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 2816 [2022-12-13 15:12:06,474 INFO L134 LiptonReduction]: Checked pairs total: 10302 [2022-12-13 15:12:06,474 INFO L136 LiptonReduction]: Total number of compositions: 44 [2022-12-13 15:12:06,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:06,476 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:06,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 15:12:06,477 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:12:06,477 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:06,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:06,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:06,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 15:12:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 17847477, now seen corresponding path program 1 times [2022-12-13 15:12:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559561275] [2022-12-13 15:12:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:06,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:06,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559561275] [2022-12-13 15:12:06,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559561275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:06,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:06,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514393732] [2022-12-13 15:12:06,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:06,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:06,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 121 [2022-12-13 15:12:06,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2022-12-13 15:12:06,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:06,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 121 [2022-12-13 15:12:06,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:06,757 INFO L130 PetriNetUnfolder]: 1623/2539 cut-off events. [2022-12-13 15:12:06,757 INFO L131 PetriNetUnfolder]: For 1054/1054 co-relation queries the response was YES. [2022-12-13 15:12:06,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 2539 events. 1623/2539 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13330 event pairs, 1623 based on Foata normal form. 0/2453 useless extension candidates. Maximal degree in co-relation 1119. Up to 2306 conditions per place. [2022-12-13 15:12:06,772 INFO L137 encePairwiseOnDemand]: 100/121 looper letters, 18 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 15:12:06,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 110 flow [2022-12-13 15:12:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 117 transitions. [2022-12-13 15:12:06,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4834710743801653 [2022-12-13 15:12:06,774 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 117 transitions. [2022-12-13 15:12:06,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 117 transitions. [2022-12-13 15:12:06,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:06,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 117 transitions. [2022-12-13 15:12:06,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 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) [2022-12-13 15:12:06,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-12-13 15:12:06,775 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-12-13 15:12:06,775 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 116 flow. Second operand 2 states and 117 transitions. [2022-12-13 15:12:06,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 110 flow [2022-12-13 15:12:06,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 98 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:06,777 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 62 flow [2022-12-13 15:12:06,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2022-12-13 15:12:06,778 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -20 predicate places. [2022-12-13 15:12:06,778 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 62 flow [2022-12-13 15:12:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2022-12-13 15:12:06,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:06,778 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:06,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:12:06,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-13 15:12:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1110423155, now seen corresponding path program 1 times [2022-12-13 15:12:06,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:06,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936372723] [2022-12-13 15:12:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:06,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:06,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:06,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:06,798 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:06,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-12-13 15:12:06,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2022-12-13 15:12:06,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2022-12-13 15:12:06,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2022-12-13 15:12:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2022-12-13 15:12:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2022-12-13 15:12:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2022-12-13 15:12:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2022-12-13 15:12:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:12:06,801 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:06,801 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:06,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 15:12:06,819 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:06,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,830 INFO L130 PetriNetUnfolder]: 6/152 cut-off events. [2022-12-13 15:12:06,830 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 15:12:06,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 152 events. 6/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 287 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 140. Up to 12 conditions per place. [2022-12-13 15:12:06,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,832 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:06,832 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 223 flow [2022-12-13 15:12:06,841 INFO L130 PetriNetUnfolder]: 6/152 cut-off events. [2022-12-13 15:12:06,841 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 15:12:06,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 152 events. 6/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 287 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 140. Up to 12 conditions per place. [2022-12-13 15:12:06,844 INFO L119 LiptonReduction]: Number of co-enabled transitions 4180 [2022-12-13 15:12:08,033 INFO L134 LiptonReduction]: Checked pairs total: 16398 [2022-12-13 15:12:08,033 INFO L136 LiptonReduction]: Total number of compositions: 49 [2022-12-13 15:12:08,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:08,035 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:08,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 15:12:08,037 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 15:12:08,037 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:08,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:08,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:08,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 15:12:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash 22464880, now seen corresponding path program 1 times [2022-12-13 15:12:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783052801] [2022-12-13 15:12:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783052801] [2022-12-13 15:12:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783052801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:08,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350081296] [2022-12-13 15:12:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:08,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 138 [2022-12-13 15:12:08,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 147 flow. Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-12-13 15:12:08,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:08,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 138 [2022-12-13 15:12:08,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:08,982 INFO L130 PetriNetUnfolder]: 8535/12203 cut-off events. [2022-12-13 15:12:08,982 INFO L131 PetriNetUnfolder]: For 6750/6750 co-relation queries the response was YES. [2022-12-13 15:12:09,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26689 conditions, 12203 events. 8535/12203 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 69097 event pairs, 8535 based on Foata normal form. 0/11862 useless extension candidates. Maximal degree in co-relation 5647. Up to 11266 conditions per place. [2022-12-13 15:12:09,061 INFO L137 encePairwiseOnDemand]: 112/138 looper letters, 22 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2022-12-13 15:12:09,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 139 flow [2022-12-13 15:12:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2022-12-13 15:12:09,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2022-12-13 15:12:09,063 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2022-12-13 15:12:09,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2022-12-13 15:12:09,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:09,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2022-12-13 15:12:09,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2022-12-13 15:12:09,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2022-12-13 15:12:09,065 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2022-12-13 15:12:09,065 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 147 flow. Second operand 2 states and 132 transitions. [2022-12-13 15:12:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 139 flow [2022-12-13 15:12:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 119 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:09,079 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 75 flow [2022-12-13 15:12:09,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=75, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2022-12-13 15:12:09,080 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2022-12-13 15:12:09,080 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 75 flow [2022-12-13 15:12:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-12-13 15:12:09,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:09,080 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:12:09,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-12-13 15:12:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1128598734, now seen corresponding path program 1 times [2022-12-13 15:12:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:09,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124901419] [2022-12-13 15:12:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:09,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:09,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:09,102 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:09,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-13 15:12:09,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-12-13 15:12:09,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-12-13 15:12:09,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-12-13 15:12:09,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-12-13 15:12:09,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-12-13 15:12:09,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-12-13 15:12:09,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-12-13 15:12:09,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-12-13 15:12:09,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-12-13 15:12:09,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-12-13 15:12:09,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-12-13 15:12:09,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-12-13 15:12:09,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:12:09,121 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:09,122 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:09,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-12-13 15:12:09,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:09,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,157 INFO L130 PetriNetUnfolder]: 7/177 cut-off events. [2022-12-13 15:12:09,157 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 15:12:09,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 177 events. 7/177 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 369 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 171. Up to 14 conditions per place. [2022-12-13 15:12:09,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:09,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 101 transitions, 262 flow [2022-12-13 15:12:09,170 INFO L130 PetriNetUnfolder]: 7/177 cut-off events. [2022-12-13 15:12:09,170 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 15:12:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 177 events. 7/177 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 369 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 171. Up to 14 conditions per place. [2022-12-13 15:12:09,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 5808 [2022-12-13 15:12:10,667 INFO L134 LiptonReduction]: Checked pairs total: 23498 [2022-12-13 15:12:10,667 INFO L136 LiptonReduction]: Total number of compositions: 54 [2022-12-13 15:12:10,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:10,669 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:10,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-12-13 15:12:10,670 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:12:10,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:10,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:10,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:10,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-12-13 15:12:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash 27605605, now seen corresponding path program 1 times [2022-12-13 15:12:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:10,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853291545] [2022-12-13 15:12:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:10,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:10,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853291545] [2022-12-13 15:12:10,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853291545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:10,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:10,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:10,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263710949] [2022-12-13 15:12:10,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:10,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:10,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 155 [2022-12-13 15:12:10,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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) [2022-12-13 15:12:10,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:10,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 155 [2022-12-13 15:12:10,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:14,440 INFO L130 PetriNetUnfolder]: 42327/57003 cut-off events. [2022-12-13 15:12:14,440 INFO L131 PetriNetUnfolder]: For 39518/39518 co-relation queries the response was YES. [2022-12-13 15:12:14,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125506 conditions, 57003 events. 42327/57003 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 341781 event pairs, 42327 based on Foata normal form. 0/55637 useless extension candidates. Maximal degree in co-relation 27279. Up to 53250 conditions per place. [2022-12-13 15:12:14,667 INFO L137 encePairwiseOnDemand]: 124/155 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-12-13 15:12:14,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 170 flow [2022-12-13 15:12:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 147 transitions. [2022-12-13 15:12:14,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2022-12-13 15:12:14,717 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 147 transitions. [2022-12-13 15:12:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 147 transitions. [2022-12-13 15:12:14,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:14,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 147 transitions. [2022-12-13 15:12:14,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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) [2022-12-13 15:12:14,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-12-13 15:12:14,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-12-13 15:12:14,720 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 180 flow. Second operand 2 states and 147 transitions. [2022-12-13 15:12:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 170 flow [2022-12-13 15:12:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 140 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:14,786 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 88 flow [2022-12-13 15:12:14,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2022-12-13 15:12:14,786 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -30 predicate places. [2022-12-13 15:12:14,787 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 88 flow [2022-12-13 15:12:14,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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) [2022-12-13 15:12:14,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:14,787 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:12:14,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-12-13 15:12:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:14,788 INFO L85 PathProgramCache]: Analyzing trace with hash 299009333, now seen corresponding path program 1 times [2022-12-13 15:12:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:14,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202411010] [2022-12-13 15:12:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:14,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:14,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:14,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:14,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-12-13 15:12:14,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-12-13 15:12:14,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-12-13 15:12:14,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-12-13 15:12:14,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-12-13 15:12:14,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-12-13 15:12:14,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-12-13 15:12:14,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-12-13 15:12:14,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-12-13 15:12:14,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-12-13 15:12:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:12:14,829 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:14,829 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:14,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-12-13 15:12:14,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:14,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,872 INFO L130 PetriNetUnfolder]: 8/202 cut-off events. [2022-12-13 15:12:14,872 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 15:12:14,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 202 events. 8/202 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 441 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 204. Up to 16 conditions per place. [2022-12-13 15:12:14,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:14,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 113 transitions, 303 flow [2022-12-13 15:12:14,892 INFO L130 PetriNetUnfolder]: 8/202 cut-off events. [2022-12-13 15:12:14,892 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 15:12:14,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 202 events. 8/202 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 441 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 204. Up to 16 conditions per place. [2022-12-13 15:12:14,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2022-12-13 15:12:16,565 INFO L134 LiptonReduction]: Checked pairs total: 31219 [2022-12-13 15:12:16,566 INFO L136 LiptonReduction]: Total number of compositions: 59 [2022-12-13 15:12:16,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:16,567 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:16,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-12-13 15:12:16,568 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:12:16,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:16,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:16,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:16,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 15:12:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 33265827, now seen corresponding path program 1 times [2022-12-13 15:12:16,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:16,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27326651] [2022-12-13 15:12:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:16,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:16,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:16,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27326651] [2022-12-13 15:12:16,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27326651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:16,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:16,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417147896] [2022-12-13 15:12:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:16,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 172 [2022-12-13 15:12:16,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 215 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-12-13 15:12:16,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:16,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 172 [2022-12-13 15:12:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:34,650 INFO L130 PetriNetUnfolder]: 202071/260779 cut-off events. [2022-12-13 15:12:34,651 INFO L131 PetriNetUnfolder]: For 217694/217694 co-relation queries the response was YES. [2022-12-13 15:12:35,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577091 conditions, 260779 events. 202071/260779 cut-off events. For 217694/217694 co-relation queries the response was YES. Maximal size of possible extension queue 8519. Compared 1628502 event pairs, 202071 based on Foata normal form. 0/255318 useless extension candidates. Maximal degree in co-relation 127887. Up to 245762 conditions per place. [2022-12-13 15:12:35,982 INFO L137 encePairwiseOnDemand]: 136/172 looper letters, 30 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2022-12-13 15:12:35,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 203 flow [2022-12-13 15:12:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:12:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2022-12-13 15:12:35,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2022-12-13 15:12:35,983 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 162 transitions. [2022-12-13 15:12:35,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 162 transitions. [2022-12-13 15:12:35,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:35,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 162 transitions. [2022-12-13 15:12:35,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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) [2022-12-13 15:12:35,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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) [2022-12-13 15:12:35,986 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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) [2022-12-13 15:12:35,986 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 215 flow. Second operand 2 states and 162 transitions. [2022-12-13 15:12:35,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 203 flow [2022-12-13 15:12:36,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 161 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-12-13 15:12:36,166 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 101 flow [2022-12-13 15:12:36,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=101, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2022-12-13 15:12:36,166 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -35 predicate places. [2022-12-13 15:12:36,166 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 101 flow [2022-12-13 15:12:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-12-13 15:12:36,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:36,167 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:36,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:12:36,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 15:12:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1044714846, now seen corresponding path program 1 times [2022-12-13 15:12:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:36,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896985561] [2022-12-13 15:12:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:36,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:36,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:12:36,191 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:36,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2022-12-13 15:12:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2022-12-13 15:12:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2022-12-13 15:12:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2022-12-13 15:12:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2022-12-13 15:12:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2022-12-13 15:12:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2022-12-13 15:12:36,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2022-12-13 15:12:36,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2022-12-13 15:12:36,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2022-12-13 15:12:36,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2022-12-13 15:12:36,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2022-12-13 15:12:36,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2022-12-13 15:12:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:12:36,197 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:36,198 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:12:36,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-12-13 15:12:36,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:12:36,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,239 INFO L130 PetriNetUnfolder]: 9/227 cut-off events. [2022-12-13 15:12:36,239 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 15:12:36,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 227 events. 9/227 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 489 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 239. Up to 18 conditions per place. [2022-12-13 15:12:36,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:12:36,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 125 transitions, 346 flow [2022-12-13 15:12:36,263 INFO L130 PetriNetUnfolder]: 9/227 cut-off events. [2022-12-13 15:12:36,263 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-12-13 15:12:36,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 227 events. 9/227 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 489 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 239. Up to 18 conditions per place. [2022-12-13 15:12:36,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 9856 [2022-12-13 15:12:38,124 INFO L134 LiptonReduction]: Checked pairs total: 41671 [2022-12-13 15:12:38,125 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-12-13 15:12:38,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:38,126 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:38,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-12-13 15:12:38,128 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-13 15:12:38,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:12:38,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:38,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:12:38,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-12-13 15:12:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 39454214, now seen corresponding path program 1 times [2022-12-13 15:12:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:38,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918956987] [2022-12-13 15:12:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:38,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918956987] [2022-12-13 15:12:38,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918956987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:38,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:38,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:12:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898892910] [2022-12-13 15:12:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:38,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:38,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:38,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:38,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 189 [2022-12-13 15:12:38,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2022-12-13 15:12:38,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:38,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 189 [2022-12-13 15:12:38,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:04,432 INFO L130 PetriNetUnfolder]: 939351/1174187 cut-off events. [2022-12-13 15:14:04,432 INFO L131 PetriNetUnfolder]: For 1147486/1147486 co-relation queries the response was YES. [2022-12-13 15:14:06,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608708 conditions, 1174187 events. 939351/1174187 cut-off events. For 1147486/1147486 co-relation queries the response was YES. Maximal size of possible extension queue 32524. Compared 7555069 event pairs, 939351 based on Foata normal form. 0/1152342 useless extension candidates. Maximal degree in co-relation 586639. Up to 1114114 conditions per place. [2022-12-13 15:14:09,978 INFO L137 encePairwiseOnDemand]: 148/189 looper letters, 34 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2022-12-13 15:14:09,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 238 flow [2022-12-13 15:14:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:14:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:14:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 177 transitions. [2022-12-13 15:14:09,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2022-12-13 15:14:09,980 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 177 transitions. [2022-12-13 15:14:09,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 177 transitions. [2022-12-13 15:14:09,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:09,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 177 transitions. [2022-12-13 15:14:09,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2022-12-13 15:14:09,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-12-13 15:14:09,981 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-12-13 15:14:09,981 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 252 flow. Second operand 2 states and 177 transitions. [2022-12-13 15:14:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 238 flow [2022-12-13 15:14:10,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 182 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-12-13 15:14:10,447 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 114 flow [2022-12-13 15:14:10,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2022-12-13 15:14:10,448 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -40 predicate places. [2022-12-13 15:14:10,448 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 114 flow [2022-12-13 15:14:10,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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) [2022-12-13 15:14:10,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:10,448 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:14:10,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-12-13 15:14:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1834617648, now seen corresponding path program 1 times [2022-12-13 15:14:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438578735] [2022-12-13 15:14:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:14:10,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:14:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:14:10,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:14:10,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:14:10,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2022-12-13 15:14:10,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2022-12-13 15:14:10,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2022-12-13 15:14:10,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2022-12-13 15:14:10,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2022-12-13 15:14:10,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2022-12-13 15:14:10,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2022-12-13 15:14:10,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2022-12-13 15:14:10,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2022-12-13 15:14:10,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2022-12-13 15:14:10,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2022-12-13 15:14:10,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:14:10,474 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:14:10,475 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:14:10,475 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-12-13 15:14:10,496 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:14:10,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,515 INFO L130 PetriNetUnfolder]: 10/252 cut-off events. [2022-12-13 15:14:10,515 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 15:14:10,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 252 events. 10/252 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 552 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 275. Up to 20 conditions per place. [2022-12-13 15:14:10,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:14:10,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 137 transitions, 391 flow [2022-12-13 15:14:10,536 INFO L130 PetriNetUnfolder]: 10/252 cut-off events. [2022-12-13 15:14:10,537 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 15:14:10,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 252 events. 10/252 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 552 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 275. Up to 20 conditions per place. [2022-12-13 15:14:10,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 12276 [2022-12-13 15:14:12,486 INFO L134 LiptonReduction]: Checked pairs total: 53445 [2022-12-13 15:14:12,486 INFO L136 LiptonReduction]: Total number of compositions: 69 [2022-12-13 15:14:12,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:14:12,488 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;@7fc2472a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:14:12,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2022-12-13 15:14:12,489 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 15:14:12,489 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:14:12,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:12,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:14:12,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2022-12-13 15:14:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 46167804, now seen corresponding path program 1 times [2022-12-13 15:14:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:12,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132241004] [2022-12-13 15:14:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:12,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132241004] [2022-12-13 15:14:12,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132241004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:12,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:12,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:14:12,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297934596] [2022-12-13 15:14:12,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:12,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:14:12,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:12,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:14:12,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:14:12,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 206 [2022-12-13 15:14:12,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 291 flow. Second operand has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 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) [2022-12-13 15:14:12,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:12,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 206 [2022-12-13 15:14:12,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand