./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu --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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:22,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:22,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:37:22,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:22,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:22,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:22,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:22,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:22,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:22,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:22,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:22,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:22,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:22,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:22,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:22,541 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:22,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:22,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:22,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:22,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:22,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:22,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:22,545 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:37:22,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:22,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:22,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:22,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:22,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:22,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:22,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:22,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:22,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:22,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:22,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:22,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:22,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:22,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:22,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:22,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:22,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:22,555 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:22,555 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_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2023-11-19 07:37:22,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:22,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:22,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:22,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:22,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:22,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2023-11-19 07:37:26,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:26,351 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:26,352 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2023-11-19 07:37:26,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/data/aa0a89b16/fc72652dfc9746eb91645d290baa8784/FLAG6e25cfccd [2023-11-19 07:37:26,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/data/aa0a89b16/fc72652dfc9746eb91645d290baa8784 [2023-11-19 07:37:26,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:26,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:26,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:26,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:26,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:26,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365db300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26, skipping insertion in model container [2023-11-19 07:37:26,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:26,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:26,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:26,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:27,049 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:27,057 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:27,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27 WrapperNode [2023-11-19 07:37:27,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:27,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:27,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:27,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:27,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,156 INFO L138 Inliner]: procedures = 173, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2023-11-19 07:37:27,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:27,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:27,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:27,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:27,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:27,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:27,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:27,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:27,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (1/1) ... [2023-11-19 07:37:27,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:27,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:27,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:37:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:37:27,279 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:37:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:27,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:27,281 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:37:27,419 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:27,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:27,749 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:27,762 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:27,762 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-19 07:37:27,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27 BoogieIcfgContainer [2023-11-19 07:37:27,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:27,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:27,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:27,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:27,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:26" (1/3) ... [2023-11-19 07:37:27,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded952d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:27" (2/3) ... [2023-11-19 07:37:27,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ded952d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27" (3/3) ... [2023-11-19 07:37:27,782 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-11-19 07:37:27,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:37:27,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:27,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:37:27,812 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:27,885 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:37:27,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,043 INFO L124 PetriNetUnfolderBase]: 27/275 cut-off events. [2023-11-19 07:37:28,044 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:37:28,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 275 events. 27/275 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 908 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-11-19 07:37:28,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:28,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 355 flow [2023-11-19 07:37:28,153 INFO L124 PetriNetUnfolderBase]: 27/275 cut-off events. [2023-11-19 07:37:28,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:37:28,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 275 events. 27/275 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 908 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-11-19 07:37:28,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 6206 [2023-11-19 07:37:33,084 INFO L134 LiptonReduction]: Checked pairs total: 13248 [2023-11-19 07:37:33,084 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:37:33,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:33,106 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;@4b602eda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:33,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:37:33,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:33,111 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-11-19 07:37:33,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:33,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:33,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:37:33,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:37:33,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash 19385373, now seen corresponding path program 1 times [2023-11-19 07:37:33,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:33,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922270928] [2023-11-19 07:37:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922270928] [2023-11-19 07:37:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922270928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:33,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889996188] [2023-11-19 07:37:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:33,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 324 [2023-11-19 07:37:33,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 54 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:33,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 324 [2023-11-19 07:37:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:33,683 INFO L124 PetriNetUnfolderBase]: 97/272 cut-off events. [2023-11-19 07:37:33,685 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:37:33,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 272 events. 97/272 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1076 event pairs, 64 based on Foata normal form. 30/261 useless extension candidates. Maximal degree in co-relation 467. Up to 204 conditions per place. [2023-11-19 07:37:33,691 INFO L140 encePairwiseOnDemand]: 310/324 looper letters, 30 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2023-11-19 07:37:33,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 169 flow [2023-11-19 07:37:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-11-19 07:37:33,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205761316872428 [2023-11-19 07:37:33,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-11-19 07:37:33,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-11-19 07:37:33,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:33,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-11-19 07:37:33,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:33,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:33,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:33,755 INFO L175 Difference]: Start difference. First operand has 44 places, 54 transitions, 115 flow. Second operand 3 states and 506 transitions. [2023-11-19 07:37:33,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 169 flow [2023-11-19 07:37:33,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:33,762 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 90 flow [2023-11-19 07:37:33,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-19 07:37:33,769 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-11-19 07:37:33,769 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 90 flow [2023-11-19 07:37:33,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:33,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:33,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:37:33,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:33,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:37:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1433795692, now seen corresponding path program 1 times [2023-11-19 07:37:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798074072] [2023-11-19 07:37:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:33,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:33,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:33,929 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:37:33,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-19 07:37:33,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-19 07:37:33,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-19 07:37:33,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-19 07:37:33,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-19 07:37:33,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-19 07:37:33,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-19 07:37:33,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-19 07:37:33,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:37:33,938 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:37:33,942 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:37:33,942 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:37:33,989 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:37:34,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,065 INFO L124 PetriNetUnfolderBase]: 45/439 cut-off events. [2023-11-19 07:37:34,065 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:37:34,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 439 events. 45/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1807 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 277. Up to 9 conditions per place. [2023-11-19 07:37:34,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:34,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 205 transitions, 426 flow [2023-11-19 07:37:34,134 INFO L124 PetriNetUnfolderBase]: 45/439 cut-off events. [2023-11-19 07:37:34,134 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:37:34,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 439 events. 45/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1807 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 277. Up to 9 conditions per place. [2023-11-19 07:37:34,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 14732 [2023-11-19 07:37:38,851 INFO L134 LiptonReduction]: Checked pairs total: 34572 [2023-11-19 07:37:38,852 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-11-19 07:37:38,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:38,856 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;@4b602eda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:38,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:37:38,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:38,860 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-19 07:37:38,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:38,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:38,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:37:38,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:37:38,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 32124792, now seen corresponding path program 1 times [2023-11-19 07:37:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231826565] [2023-11-19 07:37:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231826565] [2023-11-19 07:37:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231826565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:38,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:38,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692440535] [2023-11-19 07:37:38,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:38,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:38,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:38,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:38,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:38,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 385 [2023-11-19 07:37:38,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:38,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 385 [2023-11-19 07:37:38,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:39,344 INFO L124 PetriNetUnfolderBase]: 1251/2516 cut-off events. [2023-11-19 07:37:39,344 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-19 07:37:39,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 2516 events. 1251/2516 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 15824 event pairs, 530 based on Foata normal form. 323/2536 useless extension candidates. Maximal degree in co-relation 701. Up to 2036 conditions per place. [2023-11-19 07:37:39,365 INFO L140 encePairwiseOnDemand]: 368/385 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-19 07:37:39,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 220 flow [2023-11-19 07:37:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-19 07:37:39,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099567099567099 [2023-11-19 07:37:39,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-19 07:37:39,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-19 07:37:39,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:39,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-19 07:37:39,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,379 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 154 flow. Second operand 3 states and 589 transitions. [2023-11-19 07:37:39,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 220 flow [2023-11-19 07:37:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:39,383 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 134 flow [2023-11-19 07:37:39,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-11-19 07:37:39,385 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-19 07:37:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 134 flow [2023-11-19 07:37:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:39,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:37:39,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:37:39,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1281694860, now seen corresponding path program 1 times [2023-11-19 07:37:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213210437] [2023-11-19 07:37:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213210437] [2023-11-19 07:37:39,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213210437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:39,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519697658] [2023-11-19 07:37:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:39,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 385 [2023-11-19 07:37:39,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:39,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 385 [2023-11-19 07:37:39,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:40,488 INFO L124 PetriNetUnfolderBase]: 4520/7643 cut-off events. [2023-11-19 07:37:40,488 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-19 07:37:40,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15176 conditions, 7643 events. 4520/7643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 45277 event pairs, 1542 based on Foata normal form. 0/6902 useless extension candidates. Maximal degree in co-relation 15114. Up to 4597 conditions per place. [2023-11-19 07:37:40,544 INFO L140 encePairwiseOnDemand]: 373/385 looper letters, 72 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2023-11-19 07:37:40,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 378 flow [2023-11-19 07:37:40,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-11-19 07:37:40,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073593073593073 [2023-11-19 07:37:40,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-11-19 07:37:40,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-11-19 07:37:40,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:40,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-11-19 07:37:40,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 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) [2023-11-19 07:37:40,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:40,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:40,556 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 134 flow. Second operand 3 states and 586 transitions. [2023-11-19 07:37:40,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 378 flow [2023-11-19 07:37:40,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:40,563 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 188 flow [2023-11-19 07:37:40,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-19 07:37:40,566 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-19 07:37:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 188 flow [2023-11-19 07:37:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:40,568 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:37:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:37:40,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:37:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -812913143, now seen corresponding path program 1 times [2023-11-19 07:37:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407204436] [2023-11-19 07:37:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,654 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:40,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:37:40,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 07:37:40,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 07:37:40,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 07:37:40,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 07:37:40,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 07:37:40,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 07:37:40,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 07:37:40,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 07:37:40,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 07:37:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:37:40,676 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:37:40,677 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:37:40,677 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:37:40,701 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:37:40,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,791 INFO L124 PetriNetUnfolderBase]: 68/650 cut-off events. [2023-11-19 07:37:40,791 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:37:40,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 650 events. 68/650 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2985 event pairs, 1 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-11-19 07:37:40,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,805 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:40,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,805 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 236 transitions, 499 flow [2023-11-19 07:37:40,891 INFO L124 PetriNetUnfolderBase]: 68/650 cut-off events. [2023-11-19 07:37:40,891 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:37:40,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 650 events. 68/650 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2985 event pairs, 1 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-11-19 07:37:40,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 24882 [2023-11-19 07:37:45,934 INFO L134 LiptonReduction]: Checked pairs total: 53469 [2023-11-19 07:37:45,935 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-19 07:37:45,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:45,950 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;@4b602eda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:45,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:37:45,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:45,953 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2023-11-19 07:37:45,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:45,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:45,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:37:45,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:37:45,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash 46543458, now seen corresponding path program 1 times [2023-11-19 07:37:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096506682] [2023-11-19 07:37:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096506682] [2023-11-19 07:37:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096506682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:46,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449778704] [2023-11-19 07:37:46,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:46,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 436 [2023-11-19 07:37:46,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:46,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:46,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 436 [2023-11-19 07:37:46,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:48,664 INFO L124 PetriNetUnfolderBase]: 13896/22241 cut-off events. [2023-11-19 07:37:48,665 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-11-19 07:37:48,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42327 conditions, 22241 events. 13896/22241 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 161757 event pairs, 8406 based on Foata normal form. 3941/23282 useless extension candidates. Maximal degree in co-relation 5352. Up to 19721 conditions per place. [2023-11-19 07:37:48,832 INFO L140 encePairwiseOnDemand]: 418/436 looper letters, 49 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-19 07:37:48,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 273 flow [2023-11-19 07:37:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-11-19 07:37:48,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122324159021406 [2023-11-19 07:37:48,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-11-19 07:37:48,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-11-19 07:37:48,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:48,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-11-19 07:37:48,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:48,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:48,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:48,846 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 187 flow. Second operand 3 states and 670 transitions. [2023-11-19 07:37:48,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 273 flow [2023-11-19 07:37:48,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 72 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:48,852 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 167 flow [2023-11-19 07:37:48,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-11-19 07:37:48,856 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-11-19 07:37:48,856 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 167 flow [2023-11-19 07:37:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:48,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:48,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:48,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:37:48,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:37:48,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash -543015223, now seen corresponding path program 1 times [2023-11-19 07:37:48,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:48,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935179145] [2023-11-19 07:37:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935179145] [2023-11-19 07:37:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935179145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:48,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140578400] [2023-11-19 07:37:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:48,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 436 [2023-11-19 07:37:48,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:48,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:48,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 436 [2023-11-19 07:37:48,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:55,763 INFO L124 PetriNetUnfolderBase]: 51845/76344 cut-off events. [2023-11-19 07:37:55,763 INFO L125 PetriNetUnfolderBase]: For 2041/2041 co-relation queries the response was YES. [2023-11-19 07:37:55,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151923 conditions, 76344 events. 51845/76344 cut-off events. For 2041/2041 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 528664 event pairs, 20793 based on Foata normal form. 0/66874 useless extension candidates. Maximal degree in co-relation 151859. Up to 49168 conditions per place. [2023-11-19 07:37:56,349 INFO L140 encePairwiseOnDemand]: 421/436 looper letters, 85 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2023-11-19 07:37:56,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 465 flow [2023-11-19 07:37:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-11-19 07:37:56,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084097859327217 [2023-11-19 07:37:56,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-11-19 07:37:56,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-11-19 07:37:56,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:56,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-11-19 07:37:56,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,365 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 167 flow. Second operand 3 states and 665 transitions. [2023-11-19 07:37:56,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 465 flow [2023-11-19 07:37:56,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:56,381 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 239 flow [2023-11-19 07:37:56,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-11-19 07:37:56,384 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-11-19 07:37:56,385 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 239 flow [2023-11-19 07:37:56,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:56,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:56,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:37:56,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:37:56,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash -302807272, now seen corresponding path program 1 times [2023-11-19 07:37:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263848766] [2023-11-19 07:37:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:56,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263848766] [2023-11-19 07:37:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263848766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957170660] [2023-11-19 07:37:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:56,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:56,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957170660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:37:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796417027] [2023-11-19 07:37:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:56,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 436 [2023-11-19 07:37:56,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:56,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 436 [2023-11-19 07:37:56,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:02,466 INFO L124 PetriNetUnfolderBase]: 39847/61754 cut-off events. [2023-11-19 07:38:02,466 INFO L125 PetriNetUnfolderBase]: For 19536/19544 co-relation queries the response was YES. [2023-11-19 07:38:02,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139639 conditions, 61754 events. 39847/61754 cut-off events. For 19536/19544 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 471144 event pairs, 29437 based on Foata normal form. 4/53446 useless extension candidates. Maximal degree in co-relation 33660. Up to 53993 conditions per place. [2023-11-19 07:38:02,988 INFO L140 encePairwiseOnDemand]: 430/436 looper letters, 63 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2023-11-19 07:38:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 439 flow [2023-11-19 07:38:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-11-19 07:38:02,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908256880733945 [2023-11-19 07:38:02,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-11-19 07:38:02,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-11-19 07:38:02,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:02,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-11-19 07:38:02,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,005 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 239 flow. Second operand 3 states and 642 transitions. [2023-11-19 07:38:03,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 439 flow [2023-11-19 07:38:03,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:03,039 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 285 flow [2023-11-19 07:38:03,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2023-11-19 07:38:03,041 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-11-19 07:38:03,041 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 285 flow [2023-11-19 07:38:03,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:03,042 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:38:03,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:38:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243da629-5d93-487b-9b47-9d738ac7319c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:03,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:38:03,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash -861835901, now seen corresponding path program 1 times [2023-11-19 07:38:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715816141] [2023-11-19 07:38:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:03,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:03,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:03,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:38:03,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:38:03,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 07:38:03,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 07:38:03,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 07:38:03,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 07:38:03,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 07:38:03,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 07:38:03,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 07:38:03,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 07:38:03,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 07:38:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:03,320 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:38:03,322 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:38:03,322 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:38:03,369 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:38:03,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,539 INFO L124 PetriNetUnfolderBase]: 103/957 cut-off events. [2023-11-19 07:38:03,539 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:38:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 957 events. 103/957 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4759 event pairs, 6 based on Foata normal form. 0/814 useless extension candidates. Maximal degree in co-relation 670. Up to 32 conditions per place. [2023-11-19 07:38:03,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:03,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 267 transitions, 574 flow [2023-11-19 07:38:03,751 INFO L124 PetriNetUnfolderBase]: 103/957 cut-off events. [2023-11-19 07:38:03,752 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:38:03,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 957 events. 103/957 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4759 event pairs, 6 based on Foata normal form. 0/814 useless extension candidates. Maximal degree in co-relation 670. Up to 32 conditions per place. [2023-11-19 07:38:03,803 INFO L119 LiptonReduction]: Number of co-enabled transitions 36888 [2023-11-19 07:38:08,767 INFO L134 LiptonReduction]: Checked pairs total: 84131 [2023-11-19 07:38:08,767 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-11-19 07:38:08,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:08,770 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;@4b602eda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:08,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:38:08,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:08,772 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-11-19 07:38:08,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:08,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:08,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:38:08,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:38:08,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash 62846999, now seen corresponding path program 1 times [2023-11-19 07:38:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:08,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572582603] [2023-11-19 07:38:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572582603] [2023-11-19 07:38:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572582603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542415713] [2023-11-19 07:38:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:08,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:08,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 502 [2023-11-19 07:38:08,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:08,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:08,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 502 [2023-11-19 07:38:08,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand