./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:57,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:57,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:47:57,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:57,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:57,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:57,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:57,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:57,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:57,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:57,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:57,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:57,528 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:57,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:57,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:57,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:57,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:57,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:57,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:57,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:57,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:57,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:57,535 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:47:57,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:57,536 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:57,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:57,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:57,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:57,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:57,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:57,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:57,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:57,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:57,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:57,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:57,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:57,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:57,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:57,543 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:57,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:57,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:57,544 INFO L153 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_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2023-11-26 11:47:57,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:57,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:57,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:57,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:57,879 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:57,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-26 11:48:01,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:01,563 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:01,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2023-11-26 11:48:01,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/data/5ce6e6589/3bbe181a0ebb46d086efae8df6fec59d/FLAGd9281955a [2023-11-26 11:48:01,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/data/5ce6e6589/3bbe181a0ebb46d086efae8df6fec59d [2023-11-26 11:48:01,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:01,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:01,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:01,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:01,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:01,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45196e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01, skipping insertion in model container [2023-11-26 11:48:01,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:02,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:02,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:02,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:02,537 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:02,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02 WrapperNode [2023-11-26 11:48:02,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:02,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:02,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:02,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:02,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,643 INFO L138 Inliner]: procedures = 272, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 383 [2023-11-26 11:48:02,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:02,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:02,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:02,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:02,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:02,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:02,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:02,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:02,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (1/1) ... [2023-11-26 11:48:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:02,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:02,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:48:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:48:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:48:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:02,846 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:48:03,109 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:03,113 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:03,860 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:03,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:03,909 INFO L309 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-26 11:48:03,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:03 BoogieIcfgContainer [2023-11-26 11:48:03,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:03,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:03,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:03,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:03,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:01" (1/3) ... [2023-11-26 11:48:03,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e792db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:03, skipping insertion in model container [2023-11-26 11:48:03,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:02" (2/3) ... [2023-11-26 11:48:03,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e792db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:03, skipping insertion in model container [2023-11-26 11:48:03,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:03" (3/3) ... [2023-11-26 11:48:03,921 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-11-26 11:48:03,930 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:48:03,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:03,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-26 11:48:03,942 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:48:04,035 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:48:04,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 385 transitions, 777 flow [2023-11-26 11:48:04,294 INFO L124 PetriNetUnfolderBase]: 78/614 cut-off events. [2023-11-26 11:48:04,295 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:48:04,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 614 events. 78/614 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3404 event pairs, 0 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2023-11-26 11:48:04,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 385 transitions, 777 flow [2023-11-26 11:48:04,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 385 transitions, 777 flow [2023-11-26 11:48:04,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:04,351 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=LoopHeads, 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;@62645d3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:04,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 11:48:04,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:04,378 INFO L124 PetriNetUnfolderBase]: 14/122 cut-off events. [2023-11-26 11:48:04,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:04,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:04,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:04,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:04,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2092059008, now seen corresponding path program 1 times [2023-11-26 11:48:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14336836] [2023-11-26 11:48:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:04,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:04,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14336836] [2023-11-26 11:48:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14336836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:04,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:04,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:04,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098152125] [2023-11-26 11:48:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:04,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:04,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 385 [2023-11-26 11:48:04,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 385 transitions, 777 flow. Second operand has 2 states, 2 states have (on average 317.5) internal successors, (635), 2 states have internal predecessors, (635), 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) [2023-11-26 11:48:04,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:04,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 385 [2023-11-26 11:48:04,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:05,335 INFO L124 PetriNetUnfolderBase]: 151/1988 cut-off events. [2023-11-26 11:48:05,336 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-26 11:48:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 1988 events. 151/1988 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16475 event pairs, 112 based on Foata normal form. 369/2181 useless extension candidates. Maximal degree in co-relation 2015. Up to 278 conditions per place. [2023-11-26 11:48:05,362 INFO L140 encePairwiseOnDemand]: 344/385 looper letters, 24 selfloop transitions, 0 changer transitions 0/335 dead transitions. [2023-11-26 11:48:05,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 335 transitions, 725 flow [2023-11-26 11:48:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:48:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 699 transitions. [2023-11-26 11:48:05,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9077922077922078 [2023-11-26 11:48:05,390 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 699 transitions. [2023-11-26 11:48:05,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 699 transitions. [2023-11-26 11:48:05,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:05,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 699 transitions. [2023-11-26 11:48:05,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 349.5) internal successors, (699), 2 states have internal predecessors, (699), 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) [2023-11-26 11:48:05,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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) [2023-11-26 11:48:05,418 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 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) [2023-11-26 11:48:05,420 INFO L175 Difference]: Start difference. First operand has 340 places, 385 transitions, 777 flow. Second operand 2 states and 699 transitions. [2023-11-26 11:48:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 335 transitions, 725 flow [2023-11-26 11:48:05,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 335 transitions, 725 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:05,477 INFO L231 Difference]: Finished difference. Result has 332 places, 335 transitions, 677 flow [2023-11-26 11:48:05,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=677, PETRI_PLACES=332, PETRI_TRANSITIONS=335} [2023-11-26 11:48:05,485 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -8 predicate places. [2023-11-26 11:48:05,486 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 335 transitions, 677 flow [2023-11-26 11:48:05,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 317.5) internal successors, (635), 2 states have internal predecessors, (635), 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) [2023-11-26 11:48:05,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:05,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:05,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:05,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:05,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1728177674, now seen corresponding path program 1 times [2023-11-26 11:48:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:05,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985166229] [2023-11-26 11:48:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985166229] [2023-11-26 11:48:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985166229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718101956] [2023-11-26 11:48:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:05,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 385 [2023-11-26 11:48:05,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 335 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2023-11-26 11:48:05,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:05,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 385 [2023-11-26 11:48:05,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:06,156 INFO L124 PetriNetUnfolderBase]: 161/2096 cut-off events. [2023-11-26 11:48:06,156 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-26 11:48:06,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 2096 events. 161/2096 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17669 event pairs, 120 based on Foata normal form. 1/1913 useless extension candidates. Maximal degree in co-relation 2402. Up to 302 conditions per place. [2023-11-26 11:48:06,175 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 29 selfloop transitions, 2 changer transitions 0/336 dead transitions. [2023-11-26 11:48:06,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 336 transitions, 741 flow [2023-11-26 11:48:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 965 transitions. [2023-11-26 11:48:06,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8354978354978355 [2023-11-26 11:48:06,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 965 transitions. [2023-11-26 11:48:06,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 965 transitions. [2023-11-26 11:48:06,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:06,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 965 transitions. [2023-11-26 11:48:06,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 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) [2023-11-26 11:48:06,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 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) [2023-11-26 11:48:06,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 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) [2023-11-26 11:48:06,191 INFO L175 Difference]: Start difference. First operand has 332 places, 335 transitions, 677 flow. Second operand 3 states and 965 transitions. [2023-11-26 11:48:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 336 transitions, 741 flow [2023-11-26 11:48:06,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 336 transitions, 741 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:06,203 INFO L231 Difference]: Finished difference. Result has 335 places, 336 transitions, 689 flow [2023-11-26 11:48:06,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=335, PETRI_TRANSITIONS=336} [2023-11-26 11:48:06,205 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -5 predicate places. [2023-11-26 11:48:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 336 transitions, 689 flow [2023-11-26 11:48:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2023-11-26 11:48:06,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:06,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:06,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:06,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash -481661542, now seen corresponding path program 1 times [2023-11-26 11:48:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:06,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334587344] [2023-11-26 11:48:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:06,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:06,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334587344] [2023-11-26 11:48:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334587344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310841956] [2023-11-26 11:48:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:06,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:06,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:06,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:06,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:06,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:06,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310841956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:06,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:06,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 11:48:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205238307] [2023-11-26 11:48:06,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:06,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 385 [2023-11-26 11:48:06,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 336 transitions, 689 flow. Second operand has 10 states, 10 states have (on average 309.9) internal successors, (3099), 10 states have internal predecessors, (3099), 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) [2023-11-26 11:48:06,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:06,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 385 [2023-11-26 11:48:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:07,221 INFO L124 PetriNetUnfolderBase]: 161/2103 cut-off events. [2023-11-26 11:48:07,221 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-26 11:48:07,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 2103 events. 161/2103 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17595 event pairs, 120 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 2426. Up to 302 conditions per place. [2023-11-26 11:48:07,243 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 33 selfloop transitions, 9 changer transitions 0/344 dead transitions. [2023-11-26 11:48:07,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 344 transitions, 791 flow [2023-11-26 11:48:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:48:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:48:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2816 transitions. [2023-11-26 11:48:07,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8126984126984127 [2023-11-26 11:48:07,255 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2816 transitions. [2023-11-26 11:48:07,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2816 transitions. [2023-11-26 11:48:07,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:07,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2816 transitions. [2023-11-26 11:48:07,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 312.8888888888889) internal successors, (2816), 9 states have internal predecessors, (2816), 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) [2023-11-26 11:48:07,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 385.0) internal successors, (3850), 10 states have internal predecessors, (3850), 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) [2023-11-26 11:48:07,284 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 385.0) internal successors, (3850), 10 states have internal predecessors, (3850), 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) [2023-11-26 11:48:07,285 INFO L175 Difference]: Start difference. First operand has 335 places, 336 transitions, 689 flow. Second operand 9 states and 2816 transitions. [2023-11-26 11:48:07,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 344 transitions, 791 flow [2023-11-26 11:48:07,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 344 transitions, 789 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:07,297 INFO L231 Difference]: Finished difference. Result has 345 places, 342 transitions, 737 flow [2023-11-26 11:48:07,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=345, PETRI_TRANSITIONS=342} [2023-11-26 11:48:07,300 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, 5 predicate places. [2023-11-26 11:48:07,300 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 342 transitions, 737 flow [2023-11-26 11:48:07,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 309.9) internal successors, (3099), 10 states have internal predecessors, (3099), 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) [2023-11-26 11:48:07,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:07,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:07,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:07,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:07,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1160278938, now seen corresponding path program 2 times [2023-11-26 11:48:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257920162] [2023-11-26 11:48:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257920162] [2023-11-26 11:48:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257920162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905843499] [2023-11-26 11:48:07,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:07,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:07,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:07,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:07,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:48:07,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:07,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:07,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:08,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905843499] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:08,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 11:48:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554294275] [2023-11-26 11:48:08,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:08,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:48:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:48:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:48:08,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 385 [2023-11-26 11:48:08,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 342 transitions, 737 flow. Second operand has 18 states, 18 states have (on average 309.94444444444446) internal successors, (5579), 18 states have internal predecessors, (5579), 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) [2023-11-26 11:48:08,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:08,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 385 [2023-11-26 11:48:08,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:08,957 INFO L124 PetriNetUnfolderBase]: 161/2123 cut-off events. [2023-11-26 11:48:08,957 INFO L125 PetriNetUnfolderBase]: For 35/36 co-relation queries the response was YES. [2023-11-26 11:48:08,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 2123 events. 161/2123 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17531 event pairs, 120 based on Foata normal form. 4/1943 useless extension candidates. Maximal degree in co-relation 2509. Up to 302 conditions per place. [2023-11-26 11:48:08,982 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 37 selfloop transitions, 21 changer transitions 0/360 dead transitions. [2023-11-26 11:48:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 949 flow [2023-11-26 11:48:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:48:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:48:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6530 transitions. [2023-11-26 11:48:09,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8076685219542362 [2023-11-26 11:48:09,008 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6530 transitions. [2023-11-26 11:48:09,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6530 transitions. [2023-11-26 11:48:09,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:09,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6530 transitions. [2023-11-26 11:48:09,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 310.95238095238096) internal successors, (6530), 21 states have internal predecessors, (6530), 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) [2023-11-26 11:48:09,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 385.0) internal successors, (8470), 22 states have internal predecessors, (8470), 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) [2023-11-26 11:48:09,069 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 385.0) internal successors, (8470), 22 states have internal predecessors, (8470), 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) [2023-11-26 11:48:09,070 INFO L175 Difference]: Start difference. First operand has 345 places, 342 transitions, 737 flow. Second operand 21 states and 6530 transitions. [2023-11-26 11:48:09,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 949 flow [2023-11-26 11:48:09,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 360 transitions, 935 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:09,086 INFO L231 Difference]: Finished difference. Result has 369 places, 355 transitions, 861 flow [2023-11-26 11:48:09,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=861, PETRI_PLACES=369, PETRI_TRANSITIONS=355} [2023-11-26 11:48:09,088 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, 29 predicate places. [2023-11-26 11:48:09,088 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 355 transitions, 861 flow [2023-11-26 11:48:09,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 309.94444444444446) internal successors, (5579), 18 states have internal predecessors, (5579), 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) [2023-11-26 11:48:09,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:09,093 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:09,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:09,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:09,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:09,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash 576061338, now seen corresponding path program 3 times [2023-11-26 11:48:09,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643369889] [2023-11-26 11:48:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643369889] [2023-11-26 11:48:09,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643369889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665742919] [2023-11-26 11:48:09,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:48:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:09,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:09,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:10,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 11:48:10,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:10,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:48:10,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:10,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:48:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665742919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:10,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 11:48:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105598048] [2023-11-26 11:48:10,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:48:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:10,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:48:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:48:10,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 385 [2023-11-26 11:48:10,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 355 transitions, 861 flow. Second operand has 23 states, 23 states have (on average 310.04347826086956) internal successors, (7131), 23 states have internal predecessors, (7131), 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) [2023-11-26 11:48:10,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:10,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 385 [2023-11-26 11:48:10,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:11,410 INFO L124 PetriNetUnfolderBase]: 161/2138 cut-off events. [2023-11-26 11:48:11,410 INFO L125 PetriNetUnfolderBase]: For 136/137 co-relation queries the response was YES. [2023-11-26 11:48:11,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 2138 events. 161/2138 cut-off events. For 136/137 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17680 event pairs, 120 based on Foata normal form. 3/1957 useless extension candidates. Maximal degree in co-relation 2602. Up to 302 conditions per place. [2023-11-26 11:48:11,434 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 40 selfloop transitions, 30 changer transitions 0/372 dead transitions. [2023-11-26 11:48:11,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 372 transitions, 1129 flow [2023-11-26 11:48:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 11:48:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 11:48:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9313 transitions. [2023-11-26 11:48:11,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8063203463203463 [2023-11-26 11:48:11,468 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9313 transitions. [2023-11-26 11:48:11,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9313 transitions. [2023-11-26 11:48:11,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:11,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9313 transitions. [2023-11-26 11:48:11,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.43333333333334) internal successors, (9313), 30 states have internal predecessors, (9313), 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) [2023-11-26 11:48:11,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 385.0) internal successors, (11935), 31 states have internal predecessors, (11935), 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) [2023-11-26 11:48:11,542 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 385.0) internal successors, (11935), 31 states have internal predecessors, (11935), 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) [2023-11-26 11:48:11,542 INFO L175 Difference]: Start difference. First operand has 369 places, 355 transitions, 861 flow. Second operand 30 states and 9313 transitions. [2023-11-26 11:48:11,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 372 transitions, 1129 flow [2023-11-26 11:48:11,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 372 transitions, 1099 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 11:48:11,558 INFO L231 Difference]: Finished difference. Result has 396 places, 365 transitions, 989 flow [2023-11-26 11:48:11,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=989, PETRI_PLACES=396, PETRI_TRANSITIONS=365} [2023-11-26 11:48:11,560 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, 56 predicate places. [2023-11-26 11:48:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 365 transitions, 989 flow [2023-11-26 11:48:11,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 310.04347826086956) internal successors, (7131), 23 states have internal predecessors, (7131), 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) [2023-11-26 11:48:11,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:11,564 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:11,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:11,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:11,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 11:48:11,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash 403441674, now seen corresponding path program 4 times [2023-11-26 11:48:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560189201] [2023-11-26 11:48:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:11,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:11,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:11,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:11,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-26 11:48:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-26 11:48:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-26 11:48:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-26 11:48:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-26 11:48:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-26 11:48:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-26 11:48:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-26 11:48:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-26 11:48:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-26 11:48:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-26 11:48:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-26 11:48:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-26 11:48:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-26 11:48:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-26 11:48:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-26 11:48:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-26 11:48:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-26 11:48:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-26 11:48:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-26 11:48:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-26 11:48:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-26 11:48:11,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:11,933 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-26 11:48:11,936 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:11,936 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:48:12,025 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:48:12,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 501 transitions, 1018 flow [2023-11-26 11:48:12,294 INFO L124 PetriNetUnfolderBase]: 126/991 cut-off events. [2023-11-26 11:48:12,294 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:48:12,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 991 events. 126/991 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6424 event pairs, 0 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 616. Up to 12 conditions per place. [2023-11-26 11:48:12,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 442 places, 501 transitions, 1018 flow [2023-11-26 11:48:12,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 442 places, 501 transitions, 1018 flow [2023-11-26 11:48:12,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:12,347 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=LoopHeads, 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;@62645d3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:12,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-26 11:48:12,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:12,361 INFO L124 PetriNetUnfolderBase]: 14/122 cut-off events. [2023-11-26 11:48:12,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:12,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:12,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:12,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:12,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1023532747, now seen corresponding path program 1 times [2023-11-26 11:48:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:12,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819270977] [2023-11-26 11:48:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:12,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819270977] [2023-11-26 11:48:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819270977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110020656] [2023-11-26 11:48:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:12,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2023-11-26 11:48:12,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 501 transitions, 1018 flow. Second operand has 2 states, 2 states have (on average 409.5) internal successors, (819), 2 states have internal predecessors, (819), 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) [2023-11-26 11:48:12,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:12,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2023-11-26 11:48:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:16,927 INFO L124 PetriNetUnfolderBase]: 2695/19046 cut-off events. [2023-11-26 11:48:16,927 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2023-11-26 11:48:17,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23016 conditions, 19046 events. 2695/19046 cut-off events. For 153/157 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 254178 event pairs, 2216 based on Foata normal form. 5020/22476 useless extension candidates. Maximal degree in co-relation 20539. Up to 3898 conditions per place. [2023-11-26 11:48:17,258 INFO L140 encePairwiseOnDemand]: 447/501 looper letters, 34 selfloop transitions, 0 changer transitions 0/435 dead transitions. [2023-11-26 11:48:17,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 435 transitions, 954 flow [2023-11-26 11:48:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:48:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:48:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 906 transitions. [2023-11-26 11:48:17,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9041916167664671 [2023-11-26 11:48:17,263 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 906 transitions. [2023-11-26 11:48:17,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 906 transitions. [2023-11-26 11:48:17,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:17,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 906 transitions. [2023-11-26 11:48:17,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 453.0) internal successors, (906), 2 states have internal predecessors, (906), 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) [2023-11-26 11:48:17,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 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) [2023-11-26 11:48:17,271 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 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) [2023-11-26 11:48:17,271 INFO L175 Difference]: Start difference. First operand has 442 places, 501 transitions, 1018 flow. Second operand 2 states and 906 transitions. [2023-11-26 11:48:17,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 435 transitions, 954 flow [2023-11-26 11:48:17,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 435 transitions, 954 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:17,286 INFO L231 Difference]: Finished difference. Result has 431 places, 435 transitions, 886 flow [2023-11-26 11:48:17,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=886, PETRI_PLACES=431, PETRI_TRANSITIONS=435} [2023-11-26 11:48:17,290 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, -11 predicate places. [2023-11-26 11:48:17,290 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 435 transitions, 886 flow [2023-11-26 11:48:17,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 409.5) internal successors, (819), 2 states have internal predecessors, (819), 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) [2023-11-26 11:48:17,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:17,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:17,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:17,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:17,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash -58220341, now seen corresponding path program 1 times [2023-11-26 11:48:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:17,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16111428] [2023-11-26 11:48:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16111428] [2023-11-26 11:48:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16111428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:17,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:17,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664669622] [2023-11-26 11:48:17,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:17,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:17,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 501 [2023-11-26 11:48:17,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 435 transitions, 886 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 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) [2023-11-26 11:48:17,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:17,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 501 [2023-11-26 11:48:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:21,165 INFO L124 PetriNetUnfolderBase]: 2887/20370 cut-off events. [2023-11-26 11:48:21,165 INFO L125 PetriNetUnfolderBase]: For 151/155 co-relation queries the response was YES. [2023-11-26 11:48:21,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24627 conditions, 20370 events. 2887/20370 cut-off events. For 151/155 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 275400 event pairs, 2376 based on Foata normal form. 1/18673 useless extension candidates. Maximal degree in co-relation 24622. Up to 4183 conditions per place. [2023-11-26 11:48:21,539 INFO L140 encePairwiseOnDemand]: 498/501 looper letters, 39 selfloop transitions, 2 changer transitions 0/436 dead transitions. [2023-11-26 11:48:21,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 436 transitions, 970 flow [2023-11-26 11:48:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1251 transitions. [2023-11-26 11:48:21,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8323353293413174 [2023-11-26 11:48:21,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1251 transitions. [2023-11-26 11:48:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1251 transitions. [2023-11-26 11:48:21,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:21,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1251 transitions. [2023-11-26 11:48:21,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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) [2023-11-26 11:48:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 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) [2023-11-26 11:48:21,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 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) [2023-11-26 11:48:21,559 INFO L175 Difference]: Start difference. First operand has 431 places, 435 transitions, 886 flow. Second operand 3 states and 1251 transitions. [2023-11-26 11:48:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 436 transitions, 970 flow [2023-11-26 11:48:21,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 436 transitions, 970 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:21,577 INFO L231 Difference]: Finished difference. Result has 434 places, 436 transitions, 898 flow [2023-11-26 11:48:21,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=898, PETRI_PLACES=434, PETRI_TRANSITIONS=436} [2023-11-26 11:48:21,581 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, -8 predicate places. [2023-11-26 11:48:21,581 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 436 transitions, 898 flow [2023-11-26 11:48:21,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 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) [2023-11-26 11:48:21,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:21,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:48:21,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:21,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1982449392, now seen corresponding path program 1 times [2023-11-26 11:48:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732089549] [2023-11-26 11:48:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732089549] [2023-11-26 11:48:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732089549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968751182] [2023-11-26 11:48:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:21,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:21,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:21,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:21,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968751182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:21,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:21,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:48:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306609820] [2023-11-26 11:48:21,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:21,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:21,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 501 [2023-11-26 11:48:21,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 436 transitions, 898 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 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) [2023-11-26 11:48:21,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:21,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 501 [2023-11-26 11:48:21,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:26,305 INFO L124 PetriNetUnfolderBase]: 3133/22046 cut-off events. [2023-11-26 11:48:26,305 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-26 11:48:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26681 conditions, 22046 events. 3133/22046 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 303302 event pairs, 1312 based on Foata normal form. 1/20182 useless extension candidates. Maximal degree in co-relation 26674. Up to 4565 conditions per place. [2023-11-26 11:48:26,538 INFO L140 encePairwiseOnDemand]: 498/501 looper letters, 47 selfloop transitions, 2 changer transitions 0/445 dead transitions. [2023-11-26 11:48:26,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 445 transitions, 1014 flow [2023-11-26 11:48:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1259 transitions. [2023-11-26 11:48:26,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8376580172987359 [2023-11-26 11:48:26,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1259 transitions. [2023-11-26 11:48:26,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1259 transitions. [2023-11-26 11:48:26,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:26,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1259 transitions. [2023-11-26 11:48:26,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 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) [2023-11-26 11:48:26,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 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) [2023-11-26 11:48:26,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 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) [2023-11-26 11:48:26,561 INFO L175 Difference]: Start difference. First operand has 434 places, 436 transitions, 898 flow. Second operand 3 states and 1259 transitions. [2023-11-26 11:48:26,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 445 transitions, 1014 flow [2023-11-26 11:48:26,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 445 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:26,578 INFO L231 Difference]: Finished difference. Result has 436 places, 437 transitions, 908 flow [2023-11-26 11:48:26,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=908, PETRI_PLACES=436, PETRI_TRANSITIONS=437} [2023-11-26 11:48:26,583 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, -6 predicate places. [2023-11-26 11:48:26,583 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 437 transitions, 908 flow [2023-11-26 11:48:26,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 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) [2023-11-26 11:48:26,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:26,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:26,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:26,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:26,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -454829016, now seen corresponding path program 1 times [2023-11-26 11:48:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:26,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755362562] [2023-11-26 11:48:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755362562] [2023-11-26 11:48:26,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755362562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492496446] [2023-11-26 11:48:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:26,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:26,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:27,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:27,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492496446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:27,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 11:48:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964627972] [2023-11-26 11:48:27,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:27,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:27,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 501 [2023-11-26 11:48:27,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 437 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 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) [2023-11-26 11:48:27,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:27,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 501 [2023-11-26 11:48:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:31,426 INFO L124 PetriNetUnfolderBase]: 2883/20201 cut-off events. [2023-11-26 11:48:31,426 INFO L125 PetriNetUnfolderBase]: For 152/156 co-relation queries the response was YES. [2023-11-26 11:48:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24469 conditions, 20201 events. 2883/20201 cut-off events. For 152/156 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 274250 event pairs, 2376 based on Foata normal form. 2/18519 useless extension candidates. Maximal degree in co-relation 24461. Up to 4169 conditions per place. [2023-11-26 11:48:31,621 INFO L140 encePairwiseOnDemand]: 495/501 looper letters, 43 selfloop transitions, 9 changer transitions 0/445 dead transitions. [2023-11-26 11:48:31,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 445 transitions, 1030 flow [2023-11-26 11:48:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:48:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:48:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3654 transitions. [2023-11-26 11:48:31,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.810379241516966 [2023-11-26 11:48:31,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3654 transitions. [2023-11-26 11:48:31,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3654 transitions. [2023-11-26 11:48:31,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:31,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3654 transitions. [2023-11-26 11:48:31,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 406.0) internal successors, (3654), 9 states have internal predecessors, (3654), 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) [2023-11-26 11:48:31,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 501.0) internal successors, (5010), 10 states have internal predecessors, (5010), 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) [2023-11-26 11:48:31,663 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 501.0) internal successors, (5010), 10 states have internal predecessors, (5010), 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) [2023-11-26 11:48:31,663 INFO L175 Difference]: Start difference. First operand has 436 places, 437 transitions, 908 flow. Second operand 9 states and 3654 transitions. [2023-11-26 11:48:31,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 445 transitions, 1030 flow [2023-11-26 11:48:31,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 445 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:31,678 INFO L231 Difference]: Finished difference. Result has 446 places, 443 transitions, 956 flow [2023-11-26 11:48:31,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=446, PETRI_TRANSITIONS=443} [2023-11-26 11:48:31,680 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, 4 predicate places. [2023-11-26 11:48:31,680 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 443 transitions, 956 flow [2023-11-26 11:48:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 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) [2023-11-26 11:48:31,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:31,682 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:31,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:48:31,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2027287368, now seen corresponding path program 2 times [2023-11-26 11:48:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304027208] [2023-11-26 11:48:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304027208] [2023-11-26 11:48:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304027208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:32,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793027744] [2023-11-26 11:48:32,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:32,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:32,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:32,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:32,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:48:32,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:48:32,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:32,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:32,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:32,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793027744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:32,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 11:48:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727923927] [2023-11-26 11:48:32,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:48:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:48:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:48:32,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 501 [2023-11-26 11:48:32,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 443 transitions, 956 flow. Second operand has 18 states, 18 states have (on average 402.0) internal successors, (7236), 18 states have internal predecessors, (7236), 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) [2023-11-26 11:48:32,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:32,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 501 [2023-11-26 11:48:32,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:36,513 INFO L124 PetriNetUnfolderBase]: 2883/20221 cut-off events. [2023-11-26 11:48:36,513 INFO L125 PetriNetUnfolderBase]: For 179/183 co-relation queries the response was YES. [2023-11-26 11:48:36,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24554 conditions, 20221 events. 2883/20221 cut-off events. For 179/183 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 273730 event pairs, 2376 based on Foata normal form. 4/18541 useless extension candidates. Maximal degree in co-relation 24544. Up to 4169 conditions per place. [2023-11-26 11:48:36,735 INFO L140 encePairwiseOnDemand]: 495/501 looper letters, 47 selfloop transitions, 21 changer transitions 0/461 dead transitions. [2023-11-26 11:48:36,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 461 transitions, 1188 flow [2023-11-26 11:48:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:48:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:48:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8472 transitions. [2023-11-26 11:48:36,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8052466495580268 [2023-11-26 11:48:36,760 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8472 transitions. [2023-11-26 11:48:36,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8472 transitions. [2023-11-26 11:48:36,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:36,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8472 transitions. [2023-11-26 11:48:36,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 403.42857142857144) internal successors, (8472), 21 states have internal predecessors, (8472), 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) [2023-11-26 11:48:36,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 501.0) internal successors, (11022), 22 states have internal predecessors, (11022), 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) [2023-11-26 11:48:36,810 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 501.0) internal successors, (11022), 22 states have internal predecessors, (11022), 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) [2023-11-26 11:48:36,810 INFO L175 Difference]: Start difference. First operand has 446 places, 443 transitions, 956 flow. Second operand 21 states and 8472 transitions. [2023-11-26 11:48:36,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 461 transitions, 1188 flow [2023-11-26 11:48:36,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 461 transitions, 1174 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:36,825 INFO L231 Difference]: Finished difference. Result has 470 places, 456 transitions, 1080 flow [2023-11-26 11:48:36,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1080, PETRI_PLACES=470, PETRI_TRANSITIONS=456} [2023-11-26 11:48:36,826 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, 28 predicate places. [2023-11-26 11:48:36,827 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 456 transitions, 1080 flow [2023-11-26 11:48:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.0) internal successors, (7236), 18 states have internal predecessors, (7236), 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) [2023-11-26 11:48:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:36,830 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:37,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:48:37,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:37,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -418584184, now seen corresponding path program 3 times [2023-11-26 11:48:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442349207] [2023-11-26 11:48:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442349207] [2023-11-26 11:48:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442349207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145482726] [2023-11-26 11:48:37,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:48:37,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:37,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:37,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:48:37,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 11:48:37,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:37,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:48:37,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:37,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 11:48:38,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145482726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:38,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:38,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 11:48:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955406939] [2023-11-26 11:48:38,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:48:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:48:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:48:38,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 501 [2023-11-26 11:48:38,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 456 transitions, 1080 flow. Second operand has 23 states, 23 states have (on average 402.0869565217391) internal successors, (9248), 23 states have internal predecessors, (9248), 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) [2023-11-26 11:48:38,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:38,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 501 [2023-11-26 11:48:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:43,039 INFO L124 PetriNetUnfolderBase]: 2883/20236 cut-off events. [2023-11-26 11:48:43,039 INFO L125 PetriNetUnfolderBase]: For 280/284 co-relation queries the response was YES. [2023-11-26 11:48:43,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24652 conditions, 20236 events. 2883/20236 cut-off events. For 280/284 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 273921 event pairs, 2376 based on Foata normal form. 3/18555 useless extension candidates. Maximal degree in co-relation 24637. Up to 4169 conditions per place. [2023-11-26 11:48:43,254 INFO L140 encePairwiseOnDemand]: 495/501 looper letters, 50 selfloop transitions, 30 changer transitions 0/473 dead transitions. [2023-11-26 11:48:43,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 473 transitions, 1368 flow [2023-11-26 11:48:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 11:48:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 11:48:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12083 transitions. [2023-11-26 11:48:43,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8039254823685962 [2023-11-26 11:48:43,273 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12083 transitions. [2023-11-26 11:48:43,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12083 transitions. [2023-11-26 11:48:43,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:43,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12083 transitions. [2023-11-26 11:48:43,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 402.76666666666665) internal successors, (12083), 30 states have internal predecessors, (12083), 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) [2023-11-26 11:48:43,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 501.0) internal successors, (15531), 31 states have internal predecessors, (15531), 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) [2023-11-26 11:48:43,329 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 501.0) internal successors, (15531), 31 states have internal predecessors, (15531), 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) [2023-11-26 11:48:43,329 INFO L175 Difference]: Start difference. First operand has 470 places, 456 transitions, 1080 flow. Second operand 30 states and 12083 transitions. [2023-11-26 11:48:43,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 473 transitions, 1368 flow [2023-11-26 11:48:43,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 473 transitions, 1338 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 11:48:43,344 INFO L231 Difference]: Finished difference. Result has 497 places, 466 transitions, 1208 flow [2023-11-26 11:48:43,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1208, PETRI_PLACES=497, PETRI_TRANSITIONS=466} [2023-11-26 11:48:43,347 INFO L281 CegarLoopForPetriNet]: 442 programPoint places, 55 predicate places. [2023-11-26 11:48:43,347 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 466 transitions, 1208 flow [2023-11-26 11:48:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 402.0869565217391) internal successors, (9248), 23 states have internal predecessors, (9248), 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) [2023-11-26 11:48:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:43,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56444d9-90a4-4832-a336-0805ee8f03a7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:48:43,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 11:48:43,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 948945165, now seen corresponding path program 4 times [2023-11-26 11:48:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442223728] [2023-11-26 11:48:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:43,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:43,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:43,680 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:43,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-26 11:48:43,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-26 11:48:43,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-26 11:48:43,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-26 11:48:43,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-26 11:48:43,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-26 11:48:43,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-26 11:48:43,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-26 11:48:43,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-26 11:48:43,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-26 11:48:43,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-26 11:48:43,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-26 11:48:43,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-26 11:48:43,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-26 11:48:43,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-26 11:48:43,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-26 11:48:43,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-26 11:48:43,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-26 11:48:43,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-26 11:48:43,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-26 11:48:43,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-26 11:48:43,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-26 11:48:43,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-26 11:48:43,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-26 11:48:43,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-26 11:48:43,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-26 11:48:43,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-26 11:48:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:48:43,689 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-26 11:48:43,690 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:43,690 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:48:43,771 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:48:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 617 transitions, 1261 flow [2023-11-26 11:48:44,537 INFO L124 PetriNetUnfolderBase]: 179/1415 cut-off events. [2023-11-26 11:48:44,538 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:48:44,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 1415 events. 179/1415 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9716 event pairs, 1 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 999. Up to 16 conditions per place. [2023-11-26 11:48:44,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 617 transitions, 1261 flow [2023-11-26 11:48:44,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 617 transitions, 1261 flow [2023-11-26 11:48:44,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:44,585 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=LoopHeads, 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;@62645d3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:44,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-26 11:48:44,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:44,594 INFO L124 PetriNetUnfolderBase]: 14/122 cut-off events. [2023-11-26 11:48:44,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:44,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:44,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:44,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-26 11:48:44,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 918210398, now seen corresponding path program 1 times [2023-11-26 11:48:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:44,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28863057] [2023-11-26 11:48:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:44,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28863057] [2023-11-26 11:48:44,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28863057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:44,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:44,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:44,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789702175] [2023-11-26 11:48:44,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:44,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:48:44,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:48:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:48:44,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 617 [2023-11-26 11:48:44,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 617 transitions, 1261 flow. Second operand has 2 states, 2 states have (on average 501.5) internal successors, (1003), 2 states have internal predecessors, (1003), 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) [2023-11-26 11:48:44,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:44,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 617 [2023-11-26 11:48:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand