./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing-2.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_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/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_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/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_1a2122f8-29e9-493d-80d0-1c4132f6607c/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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:33,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:33,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:53:33,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:33,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:33,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:33,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:33,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:33,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:33,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:33,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:33,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:33,774 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:33,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:33,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:53:33,776 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:33,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:33,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:33,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:33,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:53:33,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:33,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:53:33,781 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:53:33,781 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:33,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:33,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:53:33,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:33,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:33,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:33,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:33,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:33,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:33,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:33,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:53:33,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:33,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:33,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:33,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:53:33,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:33,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:33,790 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:33,791 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_1a2122f8-29e9-493d-80d0-1c4132f6607c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2023-11-19 07:53:34,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:34,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:34,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:34,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:34,148 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:34,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing-2.i [2023-11-19 07:53:37,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:37,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:37,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing-2.i [2023-11-19 07:53:37,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/data/85ac15091/038caaa2e1fc47a0aa3403c44245b463/FLAG96267cff3 [2023-11-19 07:53:37,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/data/85ac15091/038caaa2e1fc47a0aa3403c44245b463 [2023-11-19 07:53:37,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:37,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:37,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:37,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:37,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:37,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54152a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:37,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:37,983 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:38,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:38,118 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:38,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38 WrapperNode [2023-11-19 07:53:38,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:38,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:38,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:38,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:38,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,198 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2023-11-19 07:53:38,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:38,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:38,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:38,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:38,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:38,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:38,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:38,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:38,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (1/1) ... [2023-11-19 07:53:38,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:38,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:38,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:38,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2122f8-29e9-493d-80d0-1c4132f6607c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:53:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:53:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:53:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:53:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:38,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:38,330 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 07:53:38,469 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:38,471 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:38,835 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:38,855 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:38,856 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-19 07:53:38,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38 BoogieIcfgContainer [2023-11-19 07:53:38,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:38,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:38,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:38,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:38,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:37" (1/3) ... [2023-11-19 07:53:38,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b1366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container [2023-11-19 07:53:38,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:38" (2/3) ... [2023-11-19 07:53:38,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b1366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:38, skipping insertion in model container [2023-11-19 07:53:38,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:38" (3/3) ... [2023-11-19 07:53:38,871 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing-2.i [2023-11-19 07:53:38,881 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:53:38,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:38,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:53:38,894 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:38,971 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:53:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,126 INFO L124 PetriNetUnfolderBase]: 32/265 cut-off events. [2023-11-19 07:53:39,126 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:39,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 265 events. 32/265 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1115 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2023-11-19 07:53:39,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,150 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:39,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 176 transitions, 359 flow [2023-11-19 07:53:39,259 INFO L124 PetriNetUnfolderBase]: 32/265 cut-off events. [2023-11-19 07:53:39,261 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 265 events. 32/265 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1115 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2023-11-19 07:53:39,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 9500 [2023-11-19 07:53:42,687 INFO L134 LiptonReduction]: Checked pairs total: 43108 [2023-11-19 07:53:42,687 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-11-19 07:53:42,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:42,712 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;@331c88fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:42,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:53:42,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:42,717 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-19 07:53:42,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:42,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:42,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:42,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:53:42,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 602361842, now seen corresponding path program 1 times [2023-11-19 07:53:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596644224] [2023-11-19 07:53:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:42,977 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 07:53:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596644224] [2023-11-19 07:53:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596644224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685902529] [2023-11-19 07:53:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:43,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 296 [2023-11-19 07:53:43,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 07:53:43,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:43,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 296 [2023-11-19 07:53:43,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:43,301 INFO L124 PetriNetUnfolderBase]: 217/660 cut-off events. [2023-11-19 07:53:43,301 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:53:43,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 660 events. 217/660 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3534 event pairs, 153 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 1090. Up to 437 conditions per place. [2023-11-19 07:53:43,312 INFO L140 encePairwiseOnDemand]: 277/296 looper letters, 43 selfloop transitions, 2 changer transitions 2/82 dead transitions. [2023-11-19 07:53:43,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 265 flow [2023-11-19 07:53:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-19 07:53:43,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822072072072072 [2023-11-19 07:53:43,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-19 07:53:43,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-19 07:53:43,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:43,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-19 07:53:43,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 07:53:43,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 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 07:53:43,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 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 07:53:43,366 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 177 flow. Second operand 3 states and 517 transitions. [2023-11-19 07:53:43,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 265 flow [2023-11-19 07:53:43,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:53:43,376 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 146 flow [2023-11-19 07:53:43,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-19 07:53:43,382 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-11-19 07:53:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 146 flow [2023-11-19 07:53:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 07:53:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:53:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:53:43,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:53:43,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1518767672, now seen corresponding path program 1 times [2023-11-19 07:53:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:43,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348790328] [2023-11-19 07:53:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:43,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:43,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348790328] [2023-11-19 07:53:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348790328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991067245] [2023-11-19 07:53:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:43,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 296 [2023-11-19 07:53:43,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 07:53:43,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:43,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 296 [2023-11-19 07:53:43,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:43,874 INFO L124 PetriNetUnfolderBase]: 655/1625 cut-off events. [2023-11-19 07:53:43,874 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:53:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1625 events. 655/1625 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9419 event pairs, 243 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 3074. Up to 787 conditions per place. [2023-11-19 07:53:43,886 INFO L140 encePairwiseOnDemand]: 274/296 looper letters, 78 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2023-11-19 07:53:43,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 425 flow [2023-11-19 07:53:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-11-19 07:53:43,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619369369369369 [2023-11-19 07:53:43,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-11-19 07:53:43,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-11-19 07:53:43,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:43,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-11-19 07:53:43,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 07:53:43,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 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 07:53:43,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 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 07:53:43,899 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 146 flow. Second operand 3 states and 499 transitions. [2023-11-19 07:53:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 425 flow [2023-11-19 07:53:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:43,910 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 282 flow [2023-11-19 07:53:43,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-11-19 07:53:43,911 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2023-11-19 07:53:43,912 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 282 flow [2023-11-19 07:53:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 07:53:43,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:43,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:53:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:53:43,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:53:43,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1518852813, now seen corresponding path program 1 times [2023-11-19 07:53:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981926857] [2023-11-19 07:53:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:43,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:53:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:44,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:53:44,035 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:53:44,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:53:44,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 07:53:44,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 07:53:44,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 07:53:44,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 07:53:44,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 07:53:44,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 07:53:44,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 07:53:44,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 07:53:44,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 07:53:44,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 07:53:44,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 07:53:44,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 07:53:44,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 07:53:44,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 07:53:44,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 07:53:44,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 07:53:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:53:44,043 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:53:44,051 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:53:44,051 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:53:44,099 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:53:44,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,178 INFO L124 PetriNetUnfolderBase]: 54/438 cut-off events. [2023-11-19 07:53:44,178 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:53:44,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 438 events. 54/438 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2026 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 267. Up to 9 conditions per place. [2023-11-19 07:53:44,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:44,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 228 transitions, 472 flow [2023-11-19 07:53:44,288 INFO L124 PetriNetUnfolderBase]: 54/438 cut-off events. [2023-11-19 07:53:44,288 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:53:44,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 438 events. 54/438 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2026 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 267. Up to 9 conditions per place. [2023-11-19 07:53:44,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 25100 [2023-11-19 07:53:47,546 INFO L134 LiptonReduction]: Checked pairs total: 121774 [2023-11-19 07:53:47,547 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-11-19 07:53:47,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:47,556 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;@331c88fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:47,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:53:47,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:47,560 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-19 07:53:47,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:47,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:47,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:53:47,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1001180510, now seen corresponding path program 1 times [2023-11-19 07:53:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201371513] [2023-11-19 07:53:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,621 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 07:53:47,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201371513] [2023-11-19 07:53:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201371513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612710753] [2023-11-19 07:53:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:47,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 366 [2023-11-19 07:53:47,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 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 07:53:47,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 366 [2023-11-19 07:53:47,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,100 INFO L124 PetriNetUnfolderBase]: 4890/9669 cut-off events. [2023-11-19 07:53:49,100 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-19 07:53:49,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17262 conditions, 9669 events. 4890/9669 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 78256 event pairs, 4198 based on Foata normal form. 1208/9858 useless extension candidates. Maximal degree in co-relation 10003. Up to 7516 conditions per place. [2023-11-19 07:53:49,177 INFO L140 encePairwiseOnDemand]: 341/366 looper letters, 57 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-19 07:53:49,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 116 transitions, 366 flow [2023-11-19 07:53:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2023-11-19 07:53:49,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074681238615665 [2023-11-19 07:53:49,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2023-11-19 07:53:49,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2023-11-19 07:53:49,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2023-11-19 07:53:49,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 07:53:49,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 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 07:53:49,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 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 07:53:49,189 INFO L175 Difference]: Start difference. First operand has 105 places, 125 transitions, 266 flow. Second operand 3 states and 667 transitions. [2023-11-19 07:53:49,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 116 transitions, 366 flow [2023-11-19 07:53:49,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:53:49,196 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 234 flow [2023-11-19 07:53:49,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-11-19 07:53:49,199 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2023-11-19 07:53:49,200 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 234 flow [2023-11-19 07:53:49,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 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 07:53:49,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:49,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:53:49,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:53:49,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:53:49,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 997350426, now seen corresponding path program 1 times [2023-11-19 07:53:49,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574842352] [2023-11-19 07:53:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:49,269 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 07:53:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574842352] [2023-11-19 07:53:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574842352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079305574] [2023-11-19 07:53:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:49,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:49,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:49,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 366 [2023-11-19 07:53:49,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:49,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:49,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 366 [2023-11-19 07:53:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:54,772 INFO L124 PetriNetUnfolderBase]: 28012/51432 cut-off events. [2023-11-19 07:53:54,772 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2023-11-19 07:53:54,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96598 conditions, 51432 events. 28012/51432 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 461175 event pairs, 10791 based on Foata normal form. 0/47256 useless extension candidates. Maximal degree in co-relation 96466. Up to 24003 conditions per place. [2023-11-19 07:53:55,081 INFO L140 encePairwiseOnDemand]: 333/366 looper letters, 109 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2023-11-19 07:53:55,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 640 flow [2023-11-19 07:53:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-11-19 07:53:55,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581056466302368 [2023-11-19 07:53:55,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-11-19 07:53:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-11-19 07:53:55,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:55,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-11-19 07:53:55,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 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 07:53:55,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 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 07:53:55,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 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 07:53:55,092 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 234 flow. Second operand 3 states and 638 transitions. [2023-11-19 07:53:55,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 640 flow [2023-11-19 07:53:55,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 637 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:55,104 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 442 flow [2023-11-19 07:53:55,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2023-11-19 07:53:55,106 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 5 predicate places. [2023-11-19 07:53:55,107 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 442 flow [2023-11-19 07:53:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:55,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:53:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:53:55,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:53:55,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1167032986, now seen corresponding path program 1 times [2023-11-19 07:53:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:55,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969449693] [2023-11-19 07:53:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:55,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:53:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:55,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:53:55,188 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:53:55,188 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:53:55,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:53:55,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:53:55,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:53:55,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:53:55,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:53:55,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:53:55,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:53:55,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:53:55,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:53:55,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:53:55,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:53:55,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:53:55,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:53:55,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:53:55,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:53:55,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:53:55,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:53:55,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:53:55,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:53:55,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:53:55,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:53:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:53:55,200 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:53:55,200 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:53:55,201 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:53:55,241 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:53:55,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,344 INFO L124 PetriNetUnfolderBase]: 81/658 cut-off events. [2023-11-19 07:53:55,345 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:53:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 658 events. 81/658 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3204 event pairs, 1 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 446. Up to 16 conditions per place. [2023-11-19 07:53:55,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:55,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 280 transitions, 587 flow [2023-11-19 07:53:55,447 INFO L124 PetriNetUnfolderBase]: 81/658 cut-off events. [2023-11-19 07:53:55,447 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:53:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 658 events. 81/658 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3204 event pairs, 1 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 446. Up to 16 conditions per place. [2023-11-19 07:53:55,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 45600 [2023-11-19 07:53:58,828 INFO L134 LiptonReduction]: Checked pairs total: 239167 [2023-11-19 07:53:58,828 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-11-19 07:53:58,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:58,831 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;@331c88fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:58,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:53:58,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:58,834 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-19 07:53:58,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:58,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:58,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:58,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:53:58,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1470428250, now seen corresponding path program 1 times [2023-11-19 07:53:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:58,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544968318] [2023-11-19 07:53:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:58,861 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 07:53:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:58,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544968318] [2023-11-19 07:53:58,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544968318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:58,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:58,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:58,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709522523] [2023-11-19 07:53:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:58,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 440 [2023-11-19 07:53:58,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 163 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 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 07:53:58,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:58,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 440 [2023-11-19 07:53:58,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:14,448 INFO L124 PetriNetUnfolderBase]: 91662/148440 cut-off events. [2023-11-19 07:54:14,448 INFO L125 PetriNetUnfolderBase]: For 1448/1448 co-relation queries the response was YES. [2023-11-19 07:54:14,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273586 conditions, 148440 events. 91662/148440 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 3472. Compared 1405944 event pairs, 80603 based on Foata normal form. 23456/159229 useless extension candidates. Maximal degree in co-relation 65572. Up to 124084 conditions per place. [2023-11-19 07:54:15,736 INFO L140 encePairwiseOnDemand]: 409/440 looper letters, 71 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2023-11-19 07:54:15,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 148 transitions, 469 flow [2023-11-19 07:54:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-11-19 07:54:15,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6204545454545455 [2023-11-19 07:54:15,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-11-19 07:54:15,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-11-19 07:54:15,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:15,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-11-19 07:54:15,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:15,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 07:54:15,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 07:54:15,757 INFO L175 Difference]: Start difference. First operand has 137 places, 163 transitions, 353 flow. Second operand 3 states and 819 transitions. [2023-11-19 07:54:15,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 148 transitions, 469 flow [2023-11-19 07:54:15,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 148 transitions, 469 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:15,769 INFO L231 Difference]: Finished difference. Result has 139 places, 136 transitions, 309 flow [2023-11-19 07:54:15,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=139, PETRI_TRANSITIONS=136} [2023-11-19 07:54:15,772 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2023-11-19 07:54:15,773 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 136 transitions, 309 flow [2023-11-19 07:54:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 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 07:54:15,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:15,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:54:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:15,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:54:15,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1632797851, now seen corresponding path program 1 times [2023-11-19 07:54:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192207350] [2023-11-19 07:54:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:15,820 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 07:54:15,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:15,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192207350] [2023-11-19 07:54:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192207350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87399139] [2023-11-19 07:54:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:15,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 440 [2023-11-19 07:54:15,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 136 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 07:54:15,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:15,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 440 [2023-11-19 07:54:15,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand