./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx --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 e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:16:28,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:28,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:16:28,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:28,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:28,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:28,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:28,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:28,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:28,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:28,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:28,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:28,289 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:28,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:28,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:16:28,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:16:28,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:28,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:16:28,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:28,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:16:28,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:28,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:16:28,295 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:16:28,296 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:16:28,297 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:16:28,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:16:28,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:28,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:28,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:28,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:28,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:28,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:28,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:28,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:16:28,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:28,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:28,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:28,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:28,303 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:16:28,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:28,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:28,304 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_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f [2023-11-21 22:16:28,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:28,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:28,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:28,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:28,608 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:28,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-21 22:16:31,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:32,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:32,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-21 22:16:32,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/data/cfe0d6a45/425ef27eace04bc2abbe4e6135e5d2cc/FLAG7785879f8 [2023-11-21 22:16:32,101 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/data/cfe0d6a45/425ef27eace04bc2abbe4e6135e5d2cc [2023-11-21 22:16:32,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:32,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:32,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:32,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:32,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:32,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639e64d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32, skipping insertion in model container [2023-11-21 22:16:32,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:32,421 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:16:32,720 WARN L635 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-21 22:16:32,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:32,756 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:32,769 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:16:32,794 WARN L635 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-21 22:16:32,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:32,889 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:16:32,890 WARN L675 CHandler]: The function __sync_fetch_and_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:16:32,898 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:32,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32 WrapperNode [2023-11-21 22:16:32,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:32,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:32,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:32,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:32,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,952 INFO L138 Inliner]: procedures = 269, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-21 22:16:32,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:32,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:32,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:32,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:32,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:32,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:33,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:33,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:33,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:33,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:33,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:33,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:33,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:33,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (1/1) ... [2023-11-21 22:16:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:33,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:33,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5293d-48ab-4d13-99a9-a402aa6e2525/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:16:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:16:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:16:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:16:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:16:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:16:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:16:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure __sync_fetch_and_add [2023-11-21 22:16:33,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:16:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-21 22:16:33,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-21 22:16:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:33,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:33,087 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:16:33,237 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:33,239 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:33,539 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:33,551 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:33,556 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:16:33,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:33 BoogieIcfgContainer [2023-11-21 22:16:33,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:33,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:33,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:33,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:33,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:32" (1/3) ... [2023-11-21 22:16:33,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bb188b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:33, skipping insertion in model container [2023-11-21 22:16:33,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:32" (2/3) ... [2023-11-21 22:16:33,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bb188b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:33, skipping insertion in model container [2023-11-21 22:16:33,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:33" (3/3) ... [2023-11-21 22:16:33,571 INFO L112 eAbstractionObserver]: Analyzing ICFG atomic-gcc.i [2023-11-21 22:16:33,580 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:16:33,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:33,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-21 22:16:33,593 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:16:33,659 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:16:33,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 191 flow [2023-11-21 22:16:33,765 INFO L124 PetriNetUnfolderBase]: 6/140 cut-off events. [2023-11-21 22:16:33,766 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:16:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 140 events. 6/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-11-21 22:16:33,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 92 transitions, 191 flow [2023-11-21 22:16:33,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 83 transitions, 173 flow [2023-11-21 22:16:33,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:33,802 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:33,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:33,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:33,821 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:33,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:33,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:33,822 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] [2023-11-21 22:16:33,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:33,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1154351444, now seen corresponding path program 1 times [2023-11-21 22:16:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851203591] [2023-11-21 22:16:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:33,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851203591] [2023-11-21 22:16:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851203591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:34,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412523193] [2023-11-21 22:16:34,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:35,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 92 [2023-11-21 22:16:35,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:35,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:35,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 92 [2023-11-21 22:16:35,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:35,230 INFO L124 PetriNetUnfolderBase]: 2/124 cut-off events. [2023-11-21 22:16:35,230 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:16:35,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 124 events. 2/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 149 event pairs, 0 based on Foata normal form. 8/124 useless extension candidates. Maximal degree in co-relation 26. Up to 29 conditions per place. [2023-11-21 22:16:35,233 INFO L140 encePairwiseOnDemand]: 74/92 looper letters, 14 selfloop transitions, 8 changer transitions 12/89 dead transitions. [2023-11-21 22:16:35,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 245 flow [2023-11-21 22:16:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-11-21 22:16:35,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2023-11-21 22:16:35,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-11-21 22:16:35,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-11-21 22:16:35,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:35,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-11-21 22:16:35,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 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) [2023-11-21 22:16:35,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-11-21 22:16:35,286 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-11-21 22:16:35,288 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 173 flow. Second operand 6 states and 428 transitions. [2023-11-21 22:16:35,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 245 flow [2023-11-21 22:16:35,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:35,297 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 207 flow [2023-11-21 22:16:35,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2023-11-21 22:16:35,303 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 6 predicate places. [2023-11-21 22:16:35,303 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 207 flow [2023-11-21 22:16:35,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:35,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:35,304 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] [2023-11-21 22:16:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:35,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:35,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2138409997, now seen corresponding path program 1 times [2023-11-21 22:16:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469751392] [2023-11-21 22:16:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469751392] [2023-11-21 22:16:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469751392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:35,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53819543] [2023-11-21 22:16:35,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:35,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:35,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2023-11-21 22:16:35,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-11-21 22:16:35,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:35,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2023-11-21 22:16:35,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:35,614 INFO L124 PetriNetUnfolderBase]: 0/96 cut-off events. [2023-11-21 22:16:35,614 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:16:35,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 96 events. 0/96 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 40 event pairs, 0 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-11-21 22:16:35,615 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 2 changer transitions 3/76 dead transitions. [2023-11-21 22:16:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 218 flow [2023-11-21 22:16:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2023-11-21 22:16:35,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8532608695652174 [2023-11-21 22:16:35,618 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2023-11-21 22:16:35,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2023-11-21 22:16:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:35,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2023-11-21 22:16:35,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 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) [2023-11-21 22:16:35,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-11-21 22:16:35,624 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-11-21 22:16:35,624 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 207 flow. Second operand 6 states and 471 transitions. [2023-11-21 22:16:35,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 218 flow [2023-11-21 22:16:35,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 76 transitions, 210 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:35,628 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 190 flow [2023-11-21 22:16:35,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-11-21 22:16:35,630 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-11-21 22:16:35,630 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 190 flow [2023-11-21 22:16:35,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-11-21 22:16:35,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:35,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2023-11-21 22:16:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:16:35,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1850970056, now seen corresponding path program 1 times [2023-11-21 22:16:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010987784] [2023-11-21 22:16:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:35,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:35,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:35,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:35,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:35,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:35,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:35,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:35,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:35,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:35,764 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 22:16:35,769 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:35,769 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:16:35,794 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:16:35,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 216 flow [2023-11-21 22:16:35,837 INFO L124 PetriNetUnfolderBase]: 11/247 cut-off events. [2023-11-21 22:16:35,838 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:16:35,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 247 events. 11/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 496 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-11-21 22:16:35,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 100 transitions, 216 flow [2023-11-21 22:16:35,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 198 flow [2023-11-21 22:16:35,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:35,844 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:35,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:35,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:35,850 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:35,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:35,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:35,851 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] [2023-11-21 22:16:35,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:35,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash 735237008, now seen corresponding path program 1 times [2023-11-21 22:16:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88782367] [2023-11-21 22:16:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:36,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88782367] [2023-11-21 22:16:36,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88782367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:36,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:36,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136767342] [2023-11-21 22:16:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:36,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:36,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2023-11-21 22:16:36,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-11-21 22:16:36,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:36,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2023-11-21 22:16:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:36,518 INFO L124 PetriNetUnfolderBase]: 4/205 cut-off events. [2023-11-21 22:16:36,518 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-21 22:16:36,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 205 events. 4/205 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 343 event pairs, 0 based on Foata normal form. 13/205 useless extension candidates. Maximal degree in co-relation 166. Up to 56 conditions per place. [2023-11-21 22:16:36,520 INFO L140 encePairwiseOnDemand]: 82/100 looper letters, 16 selfloop transitions, 8 changer transitions 12/97 dead transitions. [2023-11-21 22:16:36,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 274 flow [2023-11-21 22:16:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-11-21 22:16:36,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2023-11-21 22:16:36,524 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-11-21 22:16:36,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-11-21 22:16:36,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:36,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-11-21 22:16:36,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2023-11-21 22:16:36,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:36,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:36,530 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 198 flow. Second operand 6 states and 466 transitions. [2023-11-21 22:16:36,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 274 flow [2023-11-21 22:16:36,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:36,537 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 232 flow [2023-11-21 22:16:36,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2023-11-21 22:16:36,540 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2023-11-21 22:16:36,540 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 232 flow [2023-11-21 22:16:36,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-11-21 22:16:36,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:36,542 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] [2023-11-21 22:16:36,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:16:36,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:36,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1926109581, now seen corresponding path program 1 times [2023-11-21 22:16:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:36,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588277596] [2023-11-21 22:16:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:36,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588277596] [2023-11-21 22:16:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588277596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:36,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:36,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624454917] [2023-11-21 22:16:36,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:36,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:36,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:36,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:36,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 100 [2023-11-21 22:16:36,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 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) [2023-11-21 22:16:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:36,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 100 [2023-11-21 22:16:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:36,782 INFO L124 PetriNetUnfolderBase]: 2/163 cut-off events. [2023-11-21 22:16:36,782 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 22:16:36,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 163 events. 2/163 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 189 event pairs, 0 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 184. Up to 23 conditions per place. [2023-11-21 22:16:36,783 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 12 selfloop transitions, 2 changer transitions 3/85 dead transitions. [2023-11-21 22:16:36,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 251 flow [2023-11-21 22:16:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2023-11-21 22:16:36,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.85 [2023-11-21 22:16:36,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 510 transitions. [2023-11-21 22:16:36,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 510 transitions. [2023-11-21 22:16:36,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:36,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 510 transitions. [2023-11-21 22:16:36,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:36,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:36,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:36,797 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 232 flow. Second operand 6 states and 510 transitions. [2023-11-21 22:16:36,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 251 flow [2023-11-21 22:16:36,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 243 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:36,809 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 219 flow [2023-11-21 22:16:36,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2023-11-21 22:16:36,811 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 7 predicate places. [2023-11-21 22:16:36,811 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 219 flow [2023-11-21 22:16:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 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) [2023-11-21 22:16:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:36,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:16:36,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash -749732142, now seen corresponding path program 1 times [2023-11-21 22:16:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024582525] [2023-11-21 22:16:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:37,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024582525] [2023-11-21 22:16:37,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024582525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:37,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:37,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172173569] [2023-11-21 22:16:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:37,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:37,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 100 [2023-11-21 22:16:37,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 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) [2023-11-21 22:16:37,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:37,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 100 [2023-11-21 22:16:37,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:37,594 INFO L124 PetriNetUnfolderBase]: 2/156 cut-off events. [2023-11-21 22:16:37,595 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-21 22:16:37,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 156 events. 2/156 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 169 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 194. Up to 16 conditions per place. [2023-11-21 22:16:37,596 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 3 selfloop transitions, 0 changer transitions 23/81 dead transitions. [2023-11-21 22:16:37,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 81 transitions, 245 flow [2023-11-21 22:16:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-11-21 22:16:37,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825 [2023-11-21 22:16:37,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-11-21 22:16:37,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-11-21 22:16:37,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:37,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-11-21 22:16:37,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 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) [2023-11-21 22:16:37,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:37,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-21 22:16:37,604 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 219 flow. Second operand 6 states and 495 transitions. [2023-11-21 22:16:37,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 81 transitions, 245 flow [2023-11-21 22:16:37,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 81 transitions, 237 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:37,608 INFO L231 Difference]: Finished difference. Result has 95 places, 58 transitions, 155 flow [2023-11-21 22:16:37,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=95, PETRI_TRANSITIONS=58} [2023-11-21 22:16:37,611 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2023-11-21 22:16:37,612 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 58 transitions, 155 flow [2023-11-21 22:16:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 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) [2023-11-21 22:16:37,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:37,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-21 22:16:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:16:37,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:37,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1566802596, now seen corresponding path program 1 times [2023-11-21 22:16:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100098424] [2023-11-21 22:16:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:37,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:37,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:37,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:37,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:37,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:37,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:37,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:37,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:16:37,720 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:37,721 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:37,721 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:16:37,760 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:16:37,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 108 transitions, 243 flow [2023-11-21 22:16:37,860 INFO L124 PetriNetUnfolderBase]: 21/435 cut-off events. [2023-11-21 22:16:37,860 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-21 22:16:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 435 events. 21/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1171 event pairs, 1 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 255. Up to 16 conditions per place. [2023-11-21 22:16:37,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 108 transitions, 243 flow [2023-11-21 22:16:37,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 225 flow [2023-11-21 22:16:37,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:37,869 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:37,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:37,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:37,874 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:37,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:37,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:37,874 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] [2023-11-21 22:16:37,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:37,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1347176068, now seen corresponding path program 1 times [2023-11-21 22:16:37,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732732615] [2023-11-21 22:16:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:37,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:38,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:38,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732732615] [2023-11-21 22:16:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732732615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:38,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:38,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527424976] [2023-11-21 22:16:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:38,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2023-11-21 22:16:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 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) [2023-11-21 22:16:38,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2023-11-21 22:16:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:38,472 INFO L124 PetriNetUnfolderBase]: 9/343 cut-off events. [2023-11-21 22:16:38,472 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-21 22:16:38,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 343 events. 9/343 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 787 event pairs, 1 based on Foata normal form. 22/343 useless extension candidates. Maximal degree in co-relation 280. Up to 106 conditions per place. [2023-11-21 22:16:38,475 INFO L140 encePairwiseOnDemand]: 90/108 looper letters, 18 selfloop transitions, 8 changer transitions 12/105 dead transitions. [2023-11-21 22:16:38,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 305 flow [2023-11-21 22:16:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2023-11-21 22:16:38,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-21 22:16:38,482 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2023-11-21 22:16:38,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2023-11-21 22:16:38,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:38,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2023-11-21 22:16:38,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:38,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:38,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:38,487 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 225 flow. Second operand 6 states and 504 transitions. [2023-11-21 22:16:38,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 305 flow [2023-11-21 22:16:38,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 105 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:38,496 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 259 flow [2023-11-21 22:16:38,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2023-11-21 22:16:38,498 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2023-11-21 22:16:38,498 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 259 flow [2023-11-21 22:16:38,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 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) [2023-11-21 22:16:38,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:38,499 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] [2023-11-21 22:16:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:16:38,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 322435597, now seen corresponding path program 1 times [2023-11-21 22:16:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234590626] [2023-11-21 22:16:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:38,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234590626] [2023-11-21 22:16:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234590626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823516534] [2023-11-21 22:16:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:38,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:38,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:38,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2023-11-21 22:16:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2023-11-21 22:16:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2023-11-21 22:16:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:38,775 INFO L124 PetriNetUnfolderBase]: 7/273 cut-off events. [2023-11-21 22:16:38,775 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-21 22:16:38,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 273 events. 7/273 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 495 event pairs, 1 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 347. Up to 44 conditions per place. [2023-11-21 22:16:38,777 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 14 selfloop transitions, 2 changer transitions 3/93 dead transitions. [2023-11-21 22:16:38,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 282 flow [2023-11-21 22:16:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:38,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-11-21 22:16:38,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.845679012345679 [2023-11-21 22:16:38,781 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-11-21 22:16:38,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-11-21 22:16:38,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:38,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-11-21 22:16:38,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2023-11-21 22:16:38,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:38,786 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:38,786 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 259 flow. Second operand 6 states and 548 transitions. [2023-11-21 22:16:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 282 flow [2023-11-21 22:16:38,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 274 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:38,792 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 246 flow [2023-11-21 22:16:38,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2023-11-21 22:16:38,793 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2023-11-21 22:16:38,793 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 246 flow [2023-11-21 22:16:38,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2023-11-21 22:16:38,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:38,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:16:38,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:38,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 779115076, now seen corresponding path program 1 times [2023-11-21 22:16:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020067070] [2023-11-21 22:16:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020067070] [2023-11-21 22:16:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020067070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:39,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325889197] [2023-11-21 22:16:39,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:39,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:39,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2023-11-21 22:16:39,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2023-11-21 22:16:39,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:39,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2023-11-21 22:16:39,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:39,575 INFO L124 PetriNetUnfolderBase]: 7/262 cut-off events. [2023-11-21 22:16:39,575 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-21 22:16:39,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 262 events. 7/262 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 452 event pairs, 1 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 366. Up to 30 conditions per place. [2023-11-21 22:16:39,577 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 4 selfloop transitions, 0 changer transitions 24/89 dead transitions. [2023-11-21 22:16:39,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 89 transitions, 276 flow [2023-11-21 22:16:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2023-11-21 22:16:39,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8225308641975309 [2023-11-21 22:16:39,580 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2023-11-21 22:16:39,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2023-11-21 22:16:39,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:39,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2023-11-21 22:16:39,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2023-11-21 22:16:39,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:39,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 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) [2023-11-21 22:16:39,585 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 246 flow. Second operand 6 states and 533 transitions. [2023-11-21 22:16:39,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 89 transitions, 276 flow [2023-11-21 22:16:39,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 89 transitions, 268 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:39,588 INFO L231 Difference]: Finished difference. Result has 104 places, 65 transitions, 177 flow [2023-11-21 22:16:39,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=104, PETRI_TRANSITIONS=65} [2023-11-21 22:16:39,589 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-11-21 22:16:39,590 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 65 transitions, 177 flow [2023-11-21 22:16:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2023-11-21 22:16:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:39,590 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:16:39,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:39,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1588634473, now seen corresponding path program 1 times [2023-11-21 22:16:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622353104] [2023-11-21 22:16:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:39,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:39,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:39,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:39,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:39,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:39,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:39,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:39,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:39,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:16:39,674 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:39,675 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:39,675 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:16:39,705 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-21 22:16:39,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 116 transitions, 272 flow [2023-11-21 22:16:39,861 INFO L124 PetriNetUnfolderBase]: 43/787 cut-off events. [2023-11-21 22:16:39,861 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-21 22:16:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 787 events. 43/787 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2973 event pairs, 6 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-11-21 22:16:39,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 116 transitions, 272 flow [2023-11-21 22:16:39,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 254 flow [2023-11-21 22:16:39,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:39,889 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:39,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:39,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:39,897 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:39,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:39,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:39,898 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] [2023-11-21 22:16:39,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:39,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1188343920, now seen corresponding path program 1 times [2023-11-21 22:16:39,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:39,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898113060] [2023-11-21 22:16:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:39,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:40,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:40,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898113060] [2023-11-21 22:16:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898113060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46445534] [2023-11-21 22:16:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:40,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:40,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2023-11-21 22:16:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-21 22:16:40,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:40,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2023-11-21 22:16:40,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:40,449 INFO L124 PetriNetUnfolderBase]: 22/597 cut-off events. [2023-11-21 22:16:40,450 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-21 22:16:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 597 events. 22/597 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1892 event pairs, 6 based on Foata normal form. 39/597 useless extension candidates. Maximal degree in co-relation 480. Up to 204 conditions per place. [2023-11-21 22:16:40,455 INFO L140 encePairwiseOnDemand]: 98/116 looper letters, 20 selfloop transitions, 8 changer transitions 12/113 dead transitions. [2023-11-21 22:16:40,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 338 flow [2023-11-21 22:16:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2023-11-21 22:16:40,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7787356321839081 [2023-11-21 22:16:40,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2023-11-21 22:16:40,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2023-11-21 22:16:40,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:40,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2023-11-21 22:16:40,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 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) [2023-11-21 22:16:40,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:40,463 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:40,463 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 254 flow. Second operand 6 states and 542 transitions. [2023-11-21 22:16:40,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 338 flow [2023-11-21 22:16:40,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:40,467 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 288 flow [2023-11-21 22:16:40,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2023-11-21 22:16:40,469 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 6 predicate places. [2023-11-21 22:16:40,469 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 288 flow [2023-11-21 22:16:40,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-21 22:16:40,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:40,470 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] [2023-11-21 22:16:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:16:40,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:40,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1622355341, now seen corresponding path program 1 times [2023-11-21 22:16:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470080907] [2023-11-21 22:16:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:40,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470080907] [2023-11-21 22:16:40,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470080907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:40,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:40,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:40,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273624001] [2023-11-21 22:16:40,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:40,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:40,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:40,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2023-11-21 22:16:40,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:40,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:40,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2023-11-21 22:16:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:40,756 INFO L124 PetriNetUnfolderBase]: 20/471 cut-off events. [2023-11-21 22:16:40,756 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-11-21 22:16:40,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 471 events. 20/471 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1184 event pairs, 6 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 647. Up to 85 conditions per place. [2023-11-21 22:16:40,760 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 16 selfloop transitions, 2 changer transitions 3/101 dead transitions. [2023-11-21 22:16:40,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 101 transitions, 315 flow [2023-11-21 22:16:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2023-11-21 22:16:40,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8419540229885057 [2023-11-21 22:16:40,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2023-11-21 22:16:40,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2023-11-21 22:16:40,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:40,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2023-11-21 22:16:40,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 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) [2023-11-21 22:16:40,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:40,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:40,768 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 288 flow. Second operand 6 states and 586 transitions. [2023-11-21 22:16:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 101 transitions, 315 flow [2023-11-21 22:16:40,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 101 transitions, 307 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:40,772 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 275 flow [2023-11-21 22:16:40,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-11-21 22:16:40,773 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2023-11-21 22:16:40,773 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 275 flow [2023-11-21 22:16:40,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:40,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:40,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:40,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:16:40,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:40,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash -836257090, now seen corresponding path program 1 times [2023-11-21 22:16:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802671132] [2023-11-21 22:16:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802671132] [2023-11-21 22:16:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802671132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:41,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619329035] [2023-11-21 22:16:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:41,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2023-11-21 22:16:41,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2023-11-21 22:16:41,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:41,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2023-11-21 22:16:41,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:41,457 INFO L124 PetriNetUnfolderBase]: 20/452 cut-off events. [2023-11-21 22:16:41,457 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-21 22:16:41,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 452 events. 20/452 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1092 event pairs, 6 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 683. Up to 64 conditions per place. [2023-11-21 22:16:41,460 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 0 changer transitions 25/97 dead transitions. [2023-11-21 22:16:41,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 97 transitions, 309 flow [2023-11-21 22:16:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 571 transitions. [2023-11-21 22:16:41,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8204022988505747 [2023-11-21 22:16:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 571 transitions. [2023-11-21 22:16:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 571 transitions. [2023-11-21 22:16:41,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:41,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 571 transitions. [2023-11-21 22:16:41,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 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) [2023-11-21 22:16:41,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:41,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-11-21 22:16:41,468 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 275 flow. Second operand 6 states and 571 transitions. [2023-11-21 22:16:41,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 97 transitions, 309 flow [2023-11-21 22:16:41,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 97 transitions, 301 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:41,471 INFO L231 Difference]: Finished difference. Result has 113 places, 72 transitions, 201 flow [2023-11-21 22:16:41,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=113, PETRI_TRANSITIONS=72} [2023-11-21 22:16:41,472 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 4 predicate places. [2023-11-21 22:16:41,473 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 72 transitions, 201 flow [2023-11-21 22:16:41,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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) [2023-11-21 22:16:41,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:41,473 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:16:41,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:41,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 380658375, now seen corresponding path program 1 times [2023-11-21 22:16:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220788220] [2023-11-21 22:16:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:41,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:41,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:41,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:41,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:41,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:41,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:41,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:41,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:16:41,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:41,605 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:41,605 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-21 22:16:41,637 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-21 22:16:41,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 303 flow [2023-11-21 22:16:41,908 INFO L124 PetriNetUnfolderBase]: 93/1471 cut-off events. [2023-11-21 22:16:41,908 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-21 22:16:41,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 1471 events. 93/1471 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7471 event pairs, 23 based on Foata normal form. 0/1292 useless extension candidates. Maximal degree in co-relation 832. Up to 80 conditions per place. [2023-11-21 22:16:41,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 303 flow [2023-11-21 22:16:41,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 285 flow [2023-11-21 22:16:41,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:41,927 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:41,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:41,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:41,931 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:41,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:41,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:41,932 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] [2023-11-21 22:16:41,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:41,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -248137620, now seen corresponding path program 1 times [2023-11-21 22:16:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720043712] [2023-11-21 22:16:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:42,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720043712] [2023-11-21 22:16:42,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720043712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:42,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422400877] [2023-11-21 22:16:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:42,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2023-11-21 22:16:42,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-11-21 22:16:42,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:42,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2023-11-21 22:16:42,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:42,607 INFO L124 PetriNetUnfolderBase]: 55/1087 cut-off events. [2023-11-21 22:16:42,608 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2023-11-21 22:16:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 1087 events. 55/1087 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4825 event pairs, 23 based on Foata normal form. 72/1087 useless extension candidates. Maximal degree in co-relation 857. Up to 402 conditions per place. [2023-11-21 22:16:42,616 INFO L140 encePairwiseOnDemand]: 106/124 looper letters, 22 selfloop transitions, 8 changer transitions 12/121 dead transitions. [2023-11-21 22:16:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 373 flow [2023-11-21 22:16:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2023-11-21 22:16:42,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7795698924731183 [2023-11-21 22:16:42,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2023-11-21 22:16:42,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2023-11-21 22:16:42,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:42,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2023-11-21 22:16:42,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 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) [2023-11-21 22:16:42,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:42,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:42,625 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 285 flow. Second operand 6 states and 580 transitions. [2023-11-21 22:16:42,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 373 flow [2023-11-21 22:16:42,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 373 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:42,630 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 319 flow [2023-11-21 22:16:42,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2023-11-21 22:16:42,631 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2023-11-21 22:16:42,631 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 319 flow [2023-11-21 22:16:42,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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) [2023-11-21 22:16:42,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:42,632 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] [2023-11-21 22:16:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:16:42,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:42,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1530901517, now seen corresponding path program 1 times [2023-11-21 22:16:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428386234] [2023-11-21 22:16:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:42,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428386234] [2023-11-21 22:16:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428386234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989180115] [2023-11-21 22:16:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:42,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 124 [2023-11-21 22:16:42,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 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) [2023-11-21 22:16:42,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:42,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 124 [2023-11-21 22:16:42,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:43,007 INFO L124 PetriNetUnfolderBase]: 53/849 cut-off events. [2023-11-21 22:16:43,007 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-21 22:16:43,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 849 events. 53/849 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3174 event pairs, 23 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 1232. Up to 170 conditions per place. [2023-11-21 22:16:43,014 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 18 selfloop transitions, 2 changer transitions 3/109 dead transitions. [2023-11-21 22:16:43,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 109 transitions, 350 flow [2023-11-21 22:16:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 624 transitions. [2023-11-21 22:16:43,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2023-11-21 22:16:43,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 624 transitions. [2023-11-21 22:16:43,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 624 transitions. [2023-11-21 22:16:43,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:43,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 624 transitions. [2023-11-21 22:16:43,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:43,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:43,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:43,024 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 319 flow. Second operand 6 states and 624 transitions. [2023-11-21 22:16:43,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 109 transitions, 350 flow [2023-11-21 22:16:43,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 109 transitions, 342 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:43,029 INFO L231 Difference]: Finished difference. Result has 125 places, 106 transitions, 306 flow [2023-11-21 22:16:43,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=125, PETRI_TRANSITIONS=106} [2023-11-21 22:16:43,031 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 7 predicate places. [2023-11-21 22:16:43,031 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 306 flow [2023-11-21 22:16:43,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 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) [2023-11-21 22:16:43,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:43,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:43,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:16:43,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:43,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1300881344, now seen corresponding path program 1 times [2023-11-21 22:16:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797030075] [2023-11-21 22:16:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797030075] [2023-11-21 22:16:43,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797030075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:43,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:43,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62550191] [2023-11-21 22:16:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:43,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:43,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:43,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2023-11-21 22:16:43,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2023-11-21 22:16:43,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:43,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2023-11-21 22:16:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:43,886 INFO L124 PetriNetUnfolderBase]: 53/814 cut-off events. [2023-11-21 22:16:43,886 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-21 22:16:43,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 814 events. 53/814 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2929 event pairs, 23 based on Foata normal form. 0/814 useless extension candidates. Maximal degree in co-relation 1301. Up to 144 conditions per place. [2023-11-21 22:16:43,892 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 6 selfloop transitions, 0 changer transitions 26/105 dead transitions. [2023-11-21 22:16:43,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 105 transitions, 344 flow [2023-11-21 22:16:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2023-11-21 22:16:43,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8185483870967742 [2023-11-21 22:16:43,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 609 transitions. [2023-11-21 22:16:43,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 609 transitions. [2023-11-21 22:16:43,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:43,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 609 transitions. [2023-11-21 22:16:43,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2023-11-21 22:16:43,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:43,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-11-21 22:16:43,901 INFO L175 Difference]: Start difference. First operand has 125 places, 106 transitions, 306 flow. Second operand 6 states and 609 transitions. [2023-11-21 22:16:43,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 105 transitions, 344 flow [2023-11-21 22:16:43,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 105 transitions, 336 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:43,905 INFO L231 Difference]: Finished difference. Result has 122 places, 79 transitions, 227 flow [2023-11-21 22:16:43,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=122, PETRI_TRANSITIONS=79} [2023-11-21 22:16:43,907 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 4 predicate places. [2023-11-21 22:16:43,907 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 79 transitions, 227 flow [2023-11-21 22:16:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2023-11-21 22:16:43,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:43,908 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:43,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:16:43,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:43,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash 14714870, now seen corresponding path program 1 times [2023-11-21 22:16:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968313942] [2023-11-21 22:16:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:43,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:44,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:44,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:44,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:44,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:44,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:44,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:44,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 22:16:44,044 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:44,044 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:44,044 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-21 22:16:44,078 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-21 22:16:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 132 transitions, 336 flow [2023-11-21 22:16:44,664 INFO L124 PetriNetUnfolderBase]: 207/2827 cut-off events. [2023-11-21 22:16:44,664 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-21 22:16:44,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2827 events. 207/2827 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 18800 event pairs, 72 based on Foata normal form. 0/2485 useless extension candidates. Maximal degree in co-relation 1570. Up to 192 conditions per place. [2023-11-21 22:16:44,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 132 transitions, 336 flow [2023-11-21 22:16:44,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 123 transitions, 318 flow [2023-11-21 22:16:44,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:44,688 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:44,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:44,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:44,693 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:44,693 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:44,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:44,694 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] [2023-11-21 22:16:44,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:44,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1361653392, now seen corresponding path program 1 times [2023-11-21 22:16:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591385419] [2023-11-21 22:16:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:44,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591385419] [2023-11-21 22:16:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591385419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:44,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251185731] [2023-11-21 22:16:44,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:45,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 132 [2023-11-21 22:16:45,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2023-11-21 22:16:45,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:45,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 132 [2023-11-21 22:16:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:45,578 INFO L124 PetriNetUnfolderBase]: 136/2057 cut-off events. [2023-11-21 22:16:45,578 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2023-11-21 22:16:45,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 2057 events. 136/2057 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12151 event pairs, 72 based on Foata normal form. 137/2057 useless extension candidates. Maximal degree in co-relation 1599. Up to 808 conditions per place. [2023-11-21 22:16:45,596 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 24 selfloop transitions, 8 changer transitions 12/129 dead transitions. [2023-11-21 22:16:45,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 410 flow [2023-11-21 22:16:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 618 transitions. [2023-11-21 22:16:45,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2023-11-21 22:16:45,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 618 transitions. [2023-11-21 22:16:45,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 618 transitions. [2023-11-21 22:16:45,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:45,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 618 transitions. [2023-11-21 22:16:45,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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) [2023-11-21 22:16:45,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:45,606 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:45,606 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 318 flow. Second operand 6 states and 618 transitions. [2023-11-21 22:16:45,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 410 flow [2023-11-21 22:16:45,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:45,612 INFO L231 Difference]: Finished difference. Result has 133 places, 117 transitions, 352 flow [2023-11-21 22:16:45,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=133, PETRI_TRANSITIONS=117} [2023-11-21 22:16:45,613 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 6 predicate places. [2023-11-21 22:16:45,613 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 117 transitions, 352 flow [2023-11-21 22:16:45,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2023-11-21 22:16:45,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:45,614 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] [2023-11-21 22:16:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-21 22:16:45,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:45,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 48074125, now seen corresponding path program 1 times [2023-11-21 22:16:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:45,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496115154] [2023-11-21 22:16:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:45,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496115154] [2023-11-21 22:16:45,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496115154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811029435] [2023-11-21 22:16:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:45,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2023-11-21 22:16:45,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2023-11-21 22:16:45,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:45,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2023-11-21 22:16:45,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:46,134 INFO L124 PetriNetUnfolderBase]: 134/1595 cut-off events. [2023-11-21 22:16:46,135 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2023-11-21 22:16:46,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2469 conditions, 1595 events. 134/1595 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8021 event pairs, 72 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 2410. Up to 351 conditions per place. [2023-11-21 22:16:46,150 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 20 selfloop transitions, 2 changer transitions 3/117 dead transitions. [2023-11-21 22:16:46,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 117 transitions, 387 flow [2023-11-21 22:16:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2023-11-21 22:16:46,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8358585858585859 [2023-11-21 22:16:46,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2023-11-21 22:16:46,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2023-11-21 22:16:46,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:46,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2023-11-21 22:16:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 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) [2023-11-21 22:16:46,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:46,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:46,160 INFO L175 Difference]: Start difference. First operand has 133 places, 117 transitions, 352 flow. Second operand 6 states and 662 transitions. [2023-11-21 22:16:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 117 transitions, 387 flow [2023-11-21 22:16:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 117 transitions, 379 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:46,165 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 339 flow [2023-11-21 22:16:46,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2023-11-21 22:16:46,167 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 7 predicate places. [2023-11-21 22:16:46,167 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 339 flow [2023-11-21 22:16:46,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2023-11-21 22:16:46,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:46,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:46,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-21 22:16:46,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:46,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash -614757686, now seen corresponding path program 1 times [2023-11-21 22:16:46,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:46,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680136105] [2023-11-21 22:16:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680136105] [2023-11-21 22:16:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680136105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:46,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:46,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887553051] [2023-11-21 22:16:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:46,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 132 [2023-11-21 22:16:46,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 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) [2023-11-21 22:16:46,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:46,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 132 [2023-11-21 22:16:46,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:47,073 INFO L124 PetriNetUnfolderBase]: 134/1528 cut-off events. [2023-11-21 22:16:47,073 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2023-11-21 22:16:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 1528 events. 134/1528 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7460 event pairs, 72 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 2544. Up to 320 conditions per place. [2023-11-21 22:16:47,085 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 7 selfloop transitions, 0 changer transitions 27/113 dead transitions. [2023-11-21 22:16:47,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 113 transitions, 381 flow [2023-11-21 22:16:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2023-11-21 22:16:47,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8169191919191919 [2023-11-21 22:16:47,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2023-11-21 22:16:47,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2023-11-21 22:16:47,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:47,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2023-11-21 22:16:47,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 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) [2023-11-21 22:16:47,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:47,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:47,098 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 339 flow. Second operand 6 states and 647 transitions. [2023-11-21 22:16:47,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 113 transitions, 381 flow [2023-11-21 22:16:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 113 transitions, 373 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:47,103 INFO L231 Difference]: Finished difference. Result has 131 places, 86 transitions, 255 flow [2023-11-21 22:16:47,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=131, PETRI_TRANSITIONS=86} [2023-11-21 22:16:47,105 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2023-11-21 22:16:47,105 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 86 transitions, 255 flow [2023-11-21 22:16:47,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 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) [2023-11-21 22:16:47,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:47,106 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:47,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-21 22:16:47,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:47,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash 557339986, now seen corresponding path program 1 times [2023-11-21 22:16:47,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:47,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383262242] [2023-11-21 22:16:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:47,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:47,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:47,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:47,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:47,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-21 22:16:47,241 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:47,243 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:47,244 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-21 22:16:47,279 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-21 22:16:47,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 140 transitions, 371 flow [2023-11-21 22:16:48,474 INFO L124 PetriNetUnfolderBase]: 465/5543 cut-off events. [2023-11-21 22:16:48,474 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-21 22:16:48,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 5543 events. 465/5543 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 45451 event pairs, 201 based on Foata normal form. 0/4878 useless extension candidates. Maximal degree in co-relation 3045. Up to 448 conditions per place. [2023-11-21 22:16:48,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 140 transitions, 371 flow [2023-11-21 22:16:48,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 131 transitions, 353 flow [2023-11-21 22:16:48,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:48,513 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:48,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:48,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:48,517 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:48,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:48,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:48,517 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] [2023-11-21 22:16:48,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:48,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:48,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2142763900, now seen corresponding path program 1 times [2023-11-21 22:16:48,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:48,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673473705] [2023-11-21 22:16:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:48,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:48,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673473705] [2023-11-21 22:16:48,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673473705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:48,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:48,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:48,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882829880] [2023-11-21 22:16:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:48,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:48,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:48,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 140 [2023-11-21 22:16:48,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 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) [2023-11-21 22:16:48,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:48,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 140 [2023-11-21 22:16:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:49,892 INFO L124 PetriNetUnfolderBase]: 329/4003 cut-off events. [2023-11-21 22:16:49,892 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2023-11-21 22:16:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 4003 events. 329/4003 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 29876 event pairs, 201 based on Foata normal form. 266/4003 useless extension candidates. Maximal degree in co-relation 3094. Up to 1646 conditions per place. [2023-11-21 22:16:49,942 INFO L140 encePairwiseOnDemand]: 122/140 looper letters, 26 selfloop transitions, 8 changer transitions 12/137 dead transitions. [2023-11-21 22:16:49,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 137 transitions, 449 flow [2023-11-21 22:16:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-11-21 22:16:49,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.780952380952381 [2023-11-21 22:16:49,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-11-21 22:16:49,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-11-21 22:16:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:49,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-11-21 22:16:49,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 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) [2023-11-21 22:16:49,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:49,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:49,950 INFO L175 Difference]: Start difference. First operand has 136 places, 131 transitions, 353 flow. Second operand 6 states and 656 transitions. [2023-11-21 22:16:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 137 transitions, 449 flow [2023-11-21 22:16:49,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:49,955 INFO L231 Difference]: Finished difference. Result has 142 places, 125 transitions, 387 flow [2023-11-21 22:16:49,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=142, PETRI_TRANSITIONS=125} [2023-11-21 22:16:49,956 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 6 predicate places. [2023-11-21 22:16:49,956 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 125 transitions, 387 flow [2023-11-21 22:16:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 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) [2023-11-21 22:16:49,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:49,957 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] [2023-11-21 22:16:49,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-21 22:16:49,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:49,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1468840461, now seen corresponding path program 1 times [2023-11-21 22:16:49,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302866016] [2023-11-21 22:16:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302866016] [2023-11-21 22:16:50,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302866016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:50,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:50,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:50,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668573698] [2023-11-21 22:16:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:50,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:50,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:50,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 140 [2023-11-21 22:16:50,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 125 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:50,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 140 [2023-11-21 22:16:50,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:50,941 INFO L124 PetriNetUnfolderBase]: 327/3093 cut-off events. [2023-11-21 22:16:50,942 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2023-11-21 22:16:50,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 3093 events. 327/3093 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 20187 event pairs, 201 based on Foata normal form. 1/2966 useless extension candidates. Maximal degree in co-relation 4821. Up to 740 conditions per place. [2023-11-21 22:16:50,969 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 22 selfloop transitions, 2 changer transitions 3/125 dead transitions. [2023-11-21 22:16:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 125 transitions, 426 flow [2023-11-21 22:16:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2023-11-21 22:16:50,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-21 22:16:50,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2023-11-21 22:16:50,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2023-11-21 22:16:50,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:50,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2023-11-21 22:16:50,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 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) [2023-11-21 22:16:50,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:50,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:50,983 INFO L175 Difference]: Start difference. First operand has 142 places, 125 transitions, 387 flow. Second operand 6 states and 700 transitions. [2023-11-21 22:16:50,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 125 transitions, 426 flow [2023-11-21 22:16:50,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 125 transitions, 418 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:50,992 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 374 flow [2023-11-21 22:16:50,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2023-11-21 22:16:50,993 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2023-11-21 22:16:50,993 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 374 flow [2023-11-21 22:16:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:50,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-21 22:16:50,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:50,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1222113884, now seen corresponding path program 1 times [2023-11-21 22:16:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001379120] [2023-11-21 22:16:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:51,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001379120] [2023-11-21 22:16:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001379120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671478194] [2023-11-21 22:16:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:51,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:51,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:51,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 140 [2023-11-21 22:16:51,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 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) [2023-11-21 22:16:51,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:51,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 140 [2023-11-21 22:16:51,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:52,434 INFO L124 PetriNetUnfolderBase]: 327/2962 cut-off events. [2023-11-21 22:16:52,434 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2023-11-21 22:16:52,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5142 conditions, 2962 events. 327/2962 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 18876 event pairs, 201 based on Foata normal form. 0/2962 useless extension candidates. Maximal degree in co-relation 5084. Up to 704 conditions per place. [2023-11-21 22:16:52,451 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 8 selfloop transitions, 0 changer transitions 28/121 dead transitions. [2023-11-21 22:16:52,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 121 transitions, 420 flow [2023-11-21 22:16:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 685 transitions. [2023-11-21 22:16:52,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2023-11-21 22:16:52,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 685 transitions. [2023-11-21 22:16:52,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 685 transitions. [2023-11-21 22:16:52,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:52,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 685 transitions. [2023-11-21 22:16:52,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 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) [2023-11-21 22:16:52,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:52,458 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 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) [2023-11-21 22:16:52,458 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 374 flow. Second operand 6 states and 685 transitions. [2023-11-21 22:16:52,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 121 transitions, 420 flow [2023-11-21 22:16:52,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 121 transitions, 412 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:52,464 INFO L231 Difference]: Finished difference. Result has 140 places, 93 transitions, 285 flow [2023-11-21 22:16:52,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=140, PETRI_TRANSITIONS=93} [2023-11-21 22:16:52,465 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2023-11-21 22:16:52,465 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 93 transitions, 285 flow [2023-11-21 22:16:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 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) [2023-11-21 22:16:52,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:52,466 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:52,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-21 22:16:52,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:52,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1778508203, now seen corresponding path program 1 times [2023-11-21 22:16:52,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:52,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034091970] [2023-11-21 22:16:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:52,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:52,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:16:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:16:52,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:16:52,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:16:52,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:16:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:16:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:16:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:16:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:16:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-21 22:16:52,595 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:16:52,595 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:16:52,596 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-11-21 22:16:52,629 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-21 22:16:52,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 148 transitions, 408 flow [2023-11-21 22:16:54,558 INFO L124 PetriNetUnfolderBase]: 1043/11011 cut-off events. [2023-11-21 22:16:54,558 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-11-21 22:16:54,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 11011 events. 1043/11011 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 108235 event pairs, 522 based on Foata normal form. 0/9703 useless extension candidates. Maximal degree in co-relation 6025. Up to 1024 conditions per place. [2023-11-21 22:16:54,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 148 transitions, 408 flow [2023-11-21 22:16:54,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 139 transitions, 390 flow [2023-11-21 22:16:54,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:54,618 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:54,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:16:54,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:54,622 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:16:54,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:54,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:54,623 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] [2023-11-21 22:16:54,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:54,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1675179664, now seen corresponding path program 1 times [2023-11-21 22:16:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:54,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141781097] [2023-11-21 22:16:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:54,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:54,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141781097] [2023-11-21 22:16:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141781097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532853533] [2023-11-21 22:16:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:54,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:54,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 148 [2023-11-21 22:16:54,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 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) [2023-11-21 22:16:54,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:54,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 148 [2023-11-21 22:16:54,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:57,164 INFO L124 PetriNetUnfolderBase]: 778/7933 cut-off events. [2023-11-21 22:16:57,164 INFO L125 PetriNetUnfolderBase]: For 3220/3220 co-relation queries the response was YES. [2023-11-21 22:16:57,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 7933 events. 778/7933 cut-off events. For 3220/3220 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 71779 event pairs, 522 based on Foata normal form. 523/7933 useless extension candidates. Maximal degree in co-relation 6142. Up to 3380 conditions per place. [2023-11-21 22:16:57,203 INFO L140 encePairwiseOnDemand]: 130/148 looper letters, 28 selfloop transitions, 8 changer transitions 12/145 dead transitions. [2023-11-21 22:16:57,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 490 flow [2023-11-21 22:16:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 694 transitions. [2023-11-21 22:16:57,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2023-11-21 22:16:57,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 694 transitions. [2023-11-21 22:16:57,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 694 transitions. [2023-11-21 22:16:57,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:57,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 694 transitions. [2023-11-21 22:16:57,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 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) [2023-11-21 22:16:57,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:16:57,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:16:57,211 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 390 flow. Second operand 6 states and 694 transitions. [2023-11-21 22:16:57,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 490 flow [2023-11-21 22:16:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 145 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:57,217 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 424 flow [2023-11-21 22:16:57,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=424, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2023-11-21 22:16:57,218 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 6 predicate places. [2023-11-21 22:16:57,218 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 424 flow [2023-11-21 22:16:57,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 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) [2023-11-21 22:16:57,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:57,219 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] [2023-11-21 22:16:57,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-21 22:16:57,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:57,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1498233229, now seen corresponding path program 1 times [2023-11-21 22:16:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041447142] [2023-11-21 22:16:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041447142] [2023-11-21 22:16:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041447142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382943745] [2023-11-21 22:16:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:57,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:57,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 148 [2023-11-21 22:16:57,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 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) [2023-11-21 22:16:57,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:57,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 148 [2023-11-21 22:16:57,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:58,670 INFO L124 PetriNetUnfolderBase]: 776/6127 cut-off events. [2023-11-21 22:16:58,670 INFO L125 PetriNetUnfolderBase]: For 3221/3221 co-relation queries the response was YES. [2023-11-21 22:16:58,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9854 conditions, 6127 events. 776/6127 cut-off events. For 3221/3221 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 49213 event pairs, 522 based on Foata normal form. 1/5872 useless extension candidates. Maximal degree in co-relation 9793. Up to 1577 conditions per place. [2023-11-21 22:16:58,721 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 24 selfloop transitions, 2 changer transitions 3/133 dead transitions. [2023-11-21 22:16:58,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 133 transitions, 467 flow [2023-11-21 22:16:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2023-11-21 22:16:58,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.831081081081081 [2023-11-21 22:16:58,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2023-11-21 22:16:58,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2023-11-21 22:16:58,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:58,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2023-11-21 22:16:58,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 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) [2023-11-21 22:16:58,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:16:58,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:16:58,732 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 424 flow. Second operand 6 states and 738 transitions. [2023-11-21 22:16:58,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 133 transitions, 467 flow [2023-11-21 22:16:58,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 133 transitions, 459 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:58,742 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 411 flow [2023-11-21 22:16:58,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2023-11-21 22:16:58,744 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 7 predicate places. [2023-11-21 22:16:58,744 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 411 flow [2023-11-21 22:16:58,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 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) [2023-11-21 22:16:58,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:58,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:58,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-21 22:16:58,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:16:58,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash -85233930, now seen corresponding path program 1 times [2023-11-21 22:16:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436616402] [2023-11-21 22:16:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436616402] [2023-11-21 22:16:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436616402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:59,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:59,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:16:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658043071] [2023-11-21 22:16:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:59,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:59,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 148 [2023-11-21 22:16:59,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 411 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 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) [2023-11-21 22:16:59,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:59,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 148 [2023-11-21 22:16:59,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:00,608 INFO L124 PetriNetUnfolderBase]: 776/5868 cut-off events. [2023-11-21 22:17:00,608 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2023-11-21 22:17:00,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10372 conditions, 5868 events. 776/5868 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 46176 event pairs, 522 based on Foata normal form. 0/5868 useless extension candidates. Maximal degree in co-relation 10313. Up to 1536 conditions per place. [2023-11-21 22:17:00,630 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 9 selfloop transitions, 0 changer transitions 29/129 dead transitions. [2023-11-21 22:17:00,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 129 transitions, 461 flow [2023-11-21 22:17:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 723 transitions. [2023-11-21 22:17:00,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8141891891891891 [2023-11-21 22:17:00,634 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 723 transitions. [2023-11-21 22:17:00,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 723 transitions. [2023-11-21 22:17:00,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:00,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 723 transitions. [2023-11-21 22:17:00,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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) [2023-11-21 22:17:00,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:17:00,640 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2023-11-21 22:17:00,640 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 411 flow. Second operand 6 states and 723 transitions. [2023-11-21 22:17:00,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 129 transitions, 461 flow [2023-11-21 22:17:00,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 129 transitions, 453 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:17:00,647 INFO L231 Difference]: Finished difference. Result has 149 places, 100 transitions, 317 flow [2023-11-21 22:17:00,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=149, PETRI_TRANSITIONS=100} [2023-11-21 22:17:00,648 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 4 predicate places. [2023-11-21 22:17:00,648 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 100 transitions, 317 flow [2023-11-21 22:17:00,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 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) [2023-11-21 22:17:00,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:00,649 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-21 22:17:00,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:17:00,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 793323773, now seen corresponding path program 1 times [2023-11-21 22:17:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138099055] [2023-11-21 22:17:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:00,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:00,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:00,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:00,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:17:00,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:17:00,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:17:00,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:17:00,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:17:00,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-21 22:17:00,818 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:17:00,820 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:00,821 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-11-21 22:17:00,863 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-21 22:17:00,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 156 transitions, 447 flow [2023-11-21 22:17:05,365 INFO L124 PetriNetUnfolderBase]: 2325/22047 cut-off events. [2023-11-21 22:17:05,365 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-11-21 22:17:05,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24415 conditions, 22047 events. 2325/22047 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 252478 event pairs, 1291 based on Foata normal form. 0/19456 useless extension candidates. Maximal degree in co-relation 12078. Up to 2304 conditions per place. [2023-11-21 22:17:05,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 156 transitions, 447 flow [2023-11-21 22:17:05,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 147 transitions, 429 flow [2023-11-21 22:17:05,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:05,586 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;@7a244f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:05,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 22:17:05,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:17:05,590 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-21 22:17:05,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:17:05,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:05,590 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] [2023-11-21 22:17:05,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:17:05,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1530561196, now seen corresponding path program 1 times [2023-11-21 22:17:05,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:05,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335710215] [2023-11-21 22:17:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:05,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335710215] [2023-11-21 22:17:05,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335710215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:05,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:05,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973900369] [2023-11-21 22:17:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:05,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:05,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:05,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 156 [2023-11-21 22:17:05,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 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) [2023-11-21 22:17:05,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:05,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 156 [2023-11-21 22:17:05,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:09,601 INFO L124 PetriNetUnfolderBase]: 1803/15895 cut-off events. [2023-11-21 22:17:09,602 INFO L125 PetriNetUnfolderBase]: For 7113/7113 co-relation queries the response was YES. [2023-11-21 22:17:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25245 conditions, 15895 events. 1803/15895 cut-off events. For 7113/7113 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 167279 event pairs, 1291 based on Foata normal form. 1036/15895 useless extension candidates. Maximal degree in co-relation 12391. Up to 6970 conditions per place. [2023-11-21 22:17:09,750 INFO L140 encePairwiseOnDemand]: 138/156 looper letters, 30 selfloop transitions, 8 changer transitions 12/153 dead transitions. [2023-11-21 22:17:09,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 153 transitions, 533 flow [2023-11-21 22:17:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2023-11-21 22:17:09,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2023-11-21 22:17:09,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2023-11-21 22:17:09,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2023-11-21 22:17:09,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:09,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2023-11-21 22:17:09,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2023-11-21 22:17:09,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:09,758 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:09,758 INFO L175 Difference]: Start difference. First operand has 154 places, 147 transitions, 429 flow. Second operand 6 states and 732 transitions. [2023-11-21 22:17:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 153 transitions, 533 flow [2023-11-21 22:17:09,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 153 transitions, 533 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:17:09,764 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 463 flow [2023-11-21 22:17:09,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2023-11-21 22:17:09,765 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 6 predicate places. [2023-11-21 22:17:09,765 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 463 flow [2023-11-21 22:17:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 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) [2023-11-21 22:17:09,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:09,765 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] [2023-11-21 22:17:09,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-21 22:17:09,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:17:09,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash 136252429, now seen corresponding path program 1 times [2023-11-21 22:17:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066576834] [2023-11-21 22:17:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:09,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066576834] [2023-11-21 22:17:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066576834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687141470] [2023-11-21 22:17:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:09,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 156 [2023-11-21 22:17:09,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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) [2023-11-21 22:17:09,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:09,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 156 [2023-11-21 22:17:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:13,180 INFO L124 PetriNetUnfolderBase]: 1801/12297 cut-off events. [2023-11-21 22:17:13,180 INFO L125 PetriNetUnfolderBase]: For 7114/7114 co-relation queries the response was YES. [2023-11-21 22:17:13,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 12297 events. 1801/12297 cut-off events. For 7114/7114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 116777 event pairs, 1291 based on Foata normal form. 1/11786 useless extension candidates. Maximal degree in co-relation 20078. Up to 3374 conditions per place. [2023-11-21 22:17:13,299 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 26 selfloop transitions, 2 changer transitions 3/141 dead transitions. [2023-11-21 22:17:13,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 141 transitions, 510 flow [2023-11-21 22:17:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 776 transitions. [2023-11-21 22:17:13,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2023-11-21 22:17:13,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 776 transitions. [2023-11-21 22:17:13,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 776 transitions. [2023-11-21 22:17:13,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:13,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 776 transitions. [2023-11-21 22:17:13,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.33333333333334) internal successors, (776), 6 states have internal predecessors, (776), 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) [2023-11-21 22:17:13,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:13,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:13,308 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 463 flow. Second operand 6 states and 776 transitions. [2023-11-21 22:17:13,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 141 transitions, 510 flow [2023-11-21 22:17:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 141 transitions, 502 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-21 22:17:13,322 INFO L231 Difference]: Finished difference. Result has 161 places, 138 transitions, 450 flow [2023-11-21 22:17:13,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=161, PETRI_TRANSITIONS=138} [2023-11-21 22:17:13,324 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 7 predicate places. [2023-11-21 22:17:13,324 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 138 transitions, 450 flow [2023-11-21 22:17:13,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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) [2023-11-21 22:17:13,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:13,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:13,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-21 22:17:13,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:17:13,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -241833832, now seen corresponding path program 1 times [2023-11-21 22:17:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782762001] [2023-11-21 22:17:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:13,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:17:13,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782762001] [2023-11-21 22:17:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782762001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:13,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429252722] [2023-11-21 22:17:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:13,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:14,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 156 [2023-11-21 22:17:14,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 138 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 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) [2023-11-21 22:17:14,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:17:14,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 156 [2023-11-21 22:17:14,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:17:17,415 INFO L124 PetriNetUnfolderBase]: 1801/11782 cut-off events. [2023-11-21 22:17:17,416 INFO L125 PetriNetUnfolderBase]: For 2516/2516 co-relation queries the response was YES. [2023-11-21 22:17:17,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21171 conditions, 11782 events. 1801/11782 cut-off events. For 2516/2516 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 109648 event pairs, 1291 based on Foata normal form. 0/11782 useless extension candidates. Maximal degree in co-relation 21111. Up to 3328 conditions per place. [2023-11-21 22:17:17,508 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 10 selfloop transitions, 0 changer transitions 30/137 dead transitions. [2023-11-21 22:17:17,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 137 transitions, 504 flow [2023-11-21 22:17:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:17:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2023-11-21 22:17:17,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.813034188034188 [2023-11-21 22:17:17,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 761 transitions. [2023-11-21 22:17:17,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 761 transitions. [2023-11-21 22:17:17,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:17:17,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 761 transitions. [2023-11-21 22:17:17,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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) [2023-11-21 22:17:17,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:17,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-11-21 22:17:17,516 INFO L175 Difference]: Start difference. First operand has 161 places, 138 transitions, 450 flow. Second operand 6 states and 761 transitions. [2023-11-21 22:17:17,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 137 transitions, 504 flow [2023-11-21 22:17:17,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 137 transitions, 496 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-21 22:17:17,525 INFO L231 Difference]: Finished difference. Result has 158 places, 107 transitions, 351 flow [2023-11-21 22:17:17,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=158, PETRI_TRANSITIONS=107} [2023-11-21 22:17:17,526 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 4 predicate places. [2023-11-21 22:17:17,527 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 107 transitions, 351 flow [2023-11-21 22:17:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 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) [2023-11-21 22:17:17,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:17:17,528 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-21 22:17:17,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-21 22:17:17,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1409305524, now seen corresponding path program 1 times [2023-11-21 22:17:17,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013808928] [2023-11-21 22:17:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:17,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:17:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:17:17,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:17:17,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:17:17,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-21 22:17:17,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-21 22:17:17,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-21 22:17:17,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-21 22:17:17,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-21 22:17:17,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-21 22:17:17,686 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:17:17,687 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:17:17,687 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-11-21 22:17:17,719 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-11-21 22:17:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 164 transitions, 488 flow