./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --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_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/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_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/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_0e37399a-c1eb-4f76-9303-9ebb87b88438/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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:52,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:52,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:57:52,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:52,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:52,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:52,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:52,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:52,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:52,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:52,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:52,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:52,422 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:52,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:52,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:52,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:52,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:52,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:52,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:52,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:52,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:52,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:52,428 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:57:52,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:52,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:52,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:52,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:52,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:52,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:52,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:52,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:52,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:52,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:52,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:52,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:52,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:52,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:52,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:52,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:52,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:52,435 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:52,441 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_0e37399a-c1eb-4f76-9303-9ebb87b88438/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-19 07:57:52,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:52,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:52,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:52,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:52,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:52,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-19 07:57:55,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:56,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:56,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-19 07:57:56,189 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/data/a130c42ba/32e2032951c14274a6577ce371b554ad/FLAGa093b8a5d [2023-11-19 07:57:56,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/data/a130c42ba/32e2032951c14274a6577ce371b554ad [2023-11-19 07:57:56,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:56,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:56,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:56,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:56,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:56,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56, skipping insertion in model container [2023-11-19 07:57:56,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:56,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:56,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:56,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:56,546 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:56,547 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:56,553 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:56,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56 WrapperNode [2023-11-19 07:57:56,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:56,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:56,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:56,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:56,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,644 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 454 [2023-11-19 07:57:56,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:56,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:56,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:56,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:56,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:56,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:56,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:56,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:56,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (1/1) ... [2023-11-19 07:57:56,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:56,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:56,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:57:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:57:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:57:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:57:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:57:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:57:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:57:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:57:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:57:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:56,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:56,863 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 07:57:57,053 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:57,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:57,924 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:58,168 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:58,168 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:57:58,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:58 BoogieIcfgContainer [2023-11-19 07:57:58,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:58,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:58,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:58,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:58,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:56" (1/3) ... [2023-11-19 07:57:58,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c671e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:58, skipping insertion in model container [2023-11-19 07:57:58,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:56" (2/3) ... [2023-11-19 07:57:58,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c671e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:58, skipping insertion in model container [2023-11-19 07:57:58,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:58" (3/3) ... [2023-11-19 07:57:58,186 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-11-19 07:57:58,197 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:58,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:58,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-11-19 07:57:58,209 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:58,374 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:57:58,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 443 transitions, 907 flow [2023-11-19 07:57:58,688 INFO L124 PetriNetUnfolderBase]: 26/440 cut-off events. [2023-11-19 07:57:58,688 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:57:58,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 440 events. 26/440 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 854 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 322. Up to 2 conditions per place. [2023-11-19 07:57:58,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 443 transitions, 907 flow [2023-11-19 07:57:58,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 417 transitions, 852 flow [2023-11-19 07:57:58,722 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:58,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 417 transitions, 852 flow [2023-11-19 07:57:58,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 417 transitions, 852 flow [2023-11-19 07:57:58,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 417 transitions, 852 flow [2023-11-19 07:57:58,840 INFO L124 PetriNetUnfolderBase]: 25/417 cut-off events. [2023-11-19 07:57:58,840 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:57:58,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 25/417 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 851 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 322. Up to 2 conditions per place. [2023-11-19 07:57:58,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 32004 [2023-11-19 07:58:11,012 INFO L134 LiptonReduction]: Checked pairs total: 209652 [2023-11-19 07:58:11,012 INFO L136 LiptonReduction]: Total number of compositions: 390 [2023-11-19 07:58:11,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:11,051 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;@2edf574a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:11,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2023-11-19 07:58:11,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:11,057 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:58:11,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:11,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:11,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:58:11,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:11,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1886, now seen corresponding path program 1 times [2023-11-19 07:58:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626260500] [2023-11-19 07:58:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:11,181 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 07:58:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626260500] [2023-11-19 07:58:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626260500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:11,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:11,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:58:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649366263] [2023-11-19 07:58:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:11,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 833 [2023-11-19 07:58:11,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 155 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 404.5) internal successors, (809), 2 states have internal predecessors, (809), 0 states have call successors, (0), 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 07:58:11,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:11,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 833 [2023-11-19 07:58:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:12,199 INFO L124 PetriNetUnfolderBase]: 2359/5437 cut-off events. [2023-11-19 07:58:12,200 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-19 07:58:12,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8813 conditions, 5437 events. 2359/5437 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 45487 event pairs, 1665 based on Foata normal form. 1144/5614 useless extension candidates. Maximal degree in co-relation 7509. Up to 3222 conditions per place. [2023-11-19 07:58:12,328 INFO L140 encePairwiseOnDemand]: 799/833 looper letters, 39 selfloop transitions, 0 changer transitions 1/121 dead transitions. [2023-11-19 07:58:12,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 121 transitions, 340 flow [2023-11-19 07:58:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 882 transitions. [2023-11-19 07:58:12,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-11-19 07:58:12,353 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 882 transitions. [2023-11-19 07:58:12,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 882 transitions. [2023-11-19 07:58:12,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:12,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 882 transitions. [2023-11-19 07:58:12,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 441.0) internal successors, (882), 2 states have internal predecessors, (882), 0 states have call successors, (0), 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 07:58:12,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 833.0) internal successors, (2499), 3 states have internal predecessors, (2499), 0 states have call successors, (0), 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 07:58:12,380 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 833.0) internal successors, (2499), 3 states have internal predecessors, (2499), 0 states have call successors, (0), 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 07:58:12,382 INFO L175 Difference]: Start difference. First operand has 149 places, 155 transitions, 328 flow. Second operand 2 states and 882 transitions. [2023-11-19 07:58:12,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 121 transitions, 340 flow [2023-11-19 07:58:12,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 328 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:58:12,397 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 245 flow [2023-11-19 07:58:12,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=245, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2023-11-19 07:58:12,405 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -31 predicate places. [2023-11-19 07:58:12,405 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 245 flow [2023-11-19 07:58:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 404.5) internal successors, (809), 2 states have internal predecessors, (809), 0 states have call successors, (0), 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 07:58:12,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:12,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:12,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:12,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -470559096, now seen corresponding path program 1 times [2023-11-19 07:58:12,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:12,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575859363] [2023-11-19 07:58:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,624 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 07:58:12,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:12,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575859363] [2023-11-19 07:58:12,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575859363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285794370] [2023-11-19 07:58:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:12,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:12,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:12,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:12,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 833 [2023-11-19 07:58:12,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 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 07:58:12,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:12,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 833 [2023-11-19 07:58:12,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:13,691 INFO L124 PetriNetUnfolderBase]: 3311/7347 cut-off events. [2023-11-19 07:58:13,691 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-19 07:58:13,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11933 conditions, 7347 events. 3311/7347 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 61720 event pairs, 2429 based on Foata normal form. 0/5887 useless extension candidates. Maximal degree in co-relation 11930. Up to 4526 conditions per place. [2023-11-19 07:58:13,824 INFO L140 encePairwiseOnDemand]: 830/833 looper letters, 41 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-11-19 07:58:13,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 325 flow [2023-11-19 07:58:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1217 transitions. [2023-11-19 07:58:13,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699479791916767 [2023-11-19 07:58:13,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1217 transitions. [2023-11-19 07:58:13,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1217 transitions. [2023-11-19 07:58:13,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:13,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1217 transitions. [2023-11-19 07:58:13,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 405.6666666666667) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 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 07:58:13,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:13,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:13,847 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 245 flow. Second operand 3 states and 1217 transitions. [2023-11-19 07:58:13,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 325 flow [2023-11-19 07:58:13,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:13,851 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 243 flow [2023-11-19 07:58:13,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-11-19 07:58:13,853 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -32 predicate places. [2023-11-19 07:58:13,853 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 243 flow [2023-11-19 07:58:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 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 07:58:13,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:13,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:13,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1235676380, now seen corresponding path program 1 times [2023-11-19 07:58:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079105015] [2023-11-19 07:58:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:13,943 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 07:58:13,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079105015] [2023-11-19 07:58:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079105015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:13,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:13,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:13,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506939033] [2023-11-19 07:58:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:13,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:13,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:13,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 833 [2023-11-19 07:58:13,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 387.3333333333333) internal successors, (1162), 3 states have internal predecessors, (1162), 0 states have call successors, (0), 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 07:58:13,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:13,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 833 [2023-11-19 07:58:13,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:15,743 INFO L124 PetriNetUnfolderBase]: 6658/13726 cut-off events. [2023-11-19 07:58:15,743 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-11-19 07:58:15,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23003 conditions, 13726 events. 6658/13726 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 117893 event pairs, 2002 based on Foata normal form. 0/12255 useless extension candidates. Maximal degree in co-relation 22999. Up to 8784 conditions per place. [2023-11-19 07:58:15,854 INFO L140 encePairwiseOnDemand]: 824/833 looper letters, 65 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-11-19 07:58:15,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 132 transitions, 411 flow [2023-11-19 07:58:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1229 transitions. [2023-11-19 07:58:15,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491796718687475 [2023-11-19 07:58:15,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1229 transitions. [2023-11-19 07:58:15,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1229 transitions. [2023-11-19 07:58:15,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:15,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1229 transitions. [2023-11-19 07:58:15,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.6666666666667) internal successors, (1229), 3 states have internal predecessors, (1229), 0 states have call successors, (0), 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 07:58:15,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:15,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:15,878 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 243 flow. Second operand 3 states and 1229 transitions. [2023-11-19 07:58:15,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 132 transitions, 411 flow [2023-11-19 07:58:15,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:15,885 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 251 flow [2023-11-19 07:58:15,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2023-11-19 07:58:15,887 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -36 predicate places. [2023-11-19 07:58:15,888 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 251 flow [2023-11-19 07:58:15,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.3333333333333) internal successors, (1162), 3 states have internal predecessors, (1162), 0 states have call successors, (0), 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 07:58:15,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:15,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:15,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:15,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1067468342, now seen corresponding path program 1 times [2023-11-19 07:58:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880399510] [2023-11-19 07:58:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,028 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 07:58:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880399510] [2023-11-19 07:58:16,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880399510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:16,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:16,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016187409] [2023-11-19 07:58:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:16,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 833 [2023-11-19 07:58:16,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 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 07:58:16,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:16,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 833 [2023-11-19 07:58:16,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:17,329 INFO L124 PetriNetUnfolderBase]: 3695/8640 cut-off events. [2023-11-19 07:58:17,329 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2023-11-19 07:58:17,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14481 conditions, 8640 events. 3695/8640 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 77640 event pairs, 2544 based on Foata normal form. 0/7346 useless extension candidates. Maximal degree in co-relation 14477. Up to 5052 conditions per place. [2023-11-19 07:58:17,400 INFO L140 encePairwiseOnDemand]: 830/833 looper letters, 42 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2023-11-19 07:58:17,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 333 flow [2023-11-19 07:58:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1216 transitions. [2023-11-19 07:58:17,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48659463785514206 [2023-11-19 07:58:17,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1216 transitions. [2023-11-19 07:58:17,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1216 transitions. [2023-11-19 07:58:17,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:17,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1216 transitions. [2023-11-19 07:58:17,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 405.3333333333333) internal successors, (1216), 3 states have internal predecessors, (1216), 0 states have call successors, (0), 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 07:58:17,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:17,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:17,422 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 251 flow. Second operand 3 states and 1216 transitions. [2023-11-19 07:58:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 333 flow [2023-11-19 07:58:17,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 333 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:17,429 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 249 flow [2023-11-19 07:58:17,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2023-11-19 07:58:17,431 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -36 predicate places. [2023-11-19 07:58:17,431 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 249 flow [2023-11-19 07:58:17,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 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 07:58:17,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:17,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:17,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:17,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -785016387, now seen corresponding path program 1 times [2023-11-19 07:58:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:17,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871262850] [2023-11-19 07:58:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,655 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 07:58:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871262850] [2023-11-19 07:58:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871262850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:17,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:17,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138096839] [2023-11-19 07:58:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:17,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:17,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:17,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 833 [2023-11-19 07:58:17,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 392.25) internal successors, (1569), 4 states have internal predecessors, (1569), 0 states have call successors, (0), 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 07:58:17,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:17,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 833 [2023-11-19 07:58:17,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:18,620 INFO L124 PetriNetUnfolderBase]: 2710/5803 cut-off events. [2023-11-19 07:58:18,620 INFO L125 PetriNetUnfolderBase]: For 453/453 co-relation queries the response was YES. [2023-11-19 07:58:18,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 5803 events. 2710/5803 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47204 event pairs, 1782 based on Foata normal form. 1/4864 useless extension candidates. Maximal degree in co-relation 10138. Up to 3703 conditions per place. [2023-11-19 07:58:18,669 INFO L140 encePairwiseOnDemand]: 829/833 looper letters, 40 selfloop transitions, 2 changer transitions 2/116 dead transitions. [2023-11-19 07:58:18,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 343 flow [2023-11-19 07:58:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:58:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1603 transitions. [2023-11-19 07:58:18,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810924369747899 [2023-11-19 07:58:18,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1603 transitions. [2023-11-19 07:58:18,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1603 transitions. [2023-11-19 07:58:18,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:18,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1603 transitions. [2023-11-19 07:58:18,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 400.75) internal successors, (1603), 4 states have internal predecessors, (1603), 0 states have call successors, (0), 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 07:58:18,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 833.0) internal successors, (4165), 5 states have internal predecessors, (4165), 0 states have call successors, (0), 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 07:58:18,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 833.0) internal successors, (4165), 5 states have internal predecessors, (4165), 0 states have call successors, (0), 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 07:58:18,698 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 249 flow. Second operand 4 states and 1603 transitions. [2023-11-19 07:58:18,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 343 flow [2023-11-19 07:58:18,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:18,702 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 262 flow [2023-11-19 07:58:18,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2023-11-19 07:58:18,703 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -32 predicate places. [2023-11-19 07:58:18,703 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 262 flow [2023-11-19 07:58:18,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 392.25) internal successors, (1569), 4 states have internal predecessors, (1569), 0 states have call successors, (0), 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 07:58:18,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:18,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:18,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:18,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1026429553, now seen corresponding path program 1 times [2023-11-19 07:58:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:18,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126563581] [2023-11-19 07:58:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,170 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 07:58:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126563581] [2023-11-19 07:58:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126563581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314683266] [2023-11-19 07:58:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:19,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 833 [2023-11-19 07:58:19,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 388.3333333333333) internal successors, (2330), 6 states have internal predecessors, (2330), 0 states have call successors, (0), 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 07:58:19,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:19,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 833 [2023-11-19 07:58:19,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:21,639 INFO L124 PetriNetUnfolderBase]: 8188/13144 cut-off events. [2023-11-19 07:58:21,639 INFO L125 PetriNetUnfolderBase]: For 1034/1034 co-relation queries the response was YES. [2023-11-19 07:58:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25346 conditions, 13144 events. 8188/13144 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 94589 event pairs, 844 based on Foata normal form. 0/11260 useless extension candidates. Maximal degree in co-relation 25339. Up to 4072 conditions per place. [2023-11-19 07:58:21,778 INFO L140 encePairwiseOnDemand]: 828/833 looper letters, 146 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2023-11-19 07:58:21,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 217 transitions, 808 flow [2023-11-19 07:58:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2456 transitions. [2023-11-19 07:58:21,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913965586234494 [2023-11-19 07:58:21,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2456 transitions. [2023-11-19 07:58:21,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2456 transitions. [2023-11-19 07:58:21,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:21,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2456 transitions. [2023-11-19 07:58:21,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 409.3333333333333) internal successors, (2456), 6 states have internal predecessors, (2456), 0 states have call successors, (0), 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 07:58:21,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:21,824 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:21,824 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 262 flow. Second operand 6 states and 2456 transitions. [2023-11-19 07:58:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 217 transitions, 808 flow [2023-11-19 07:58:21,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 217 transitions, 802 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:21,834 INFO L231 Difference]: Finished difference. Result has 118 places, 113 transitions, 262 flow [2023-11-19 07:58:21,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2023-11-19 07:58:21,839 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -31 predicate places. [2023-11-19 07:58:21,839 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 262 flow [2023-11-19 07:58:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 388.3333333333333) internal successors, (2330), 6 states have internal predecessors, (2330), 0 states have call successors, (0), 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 07:58:21,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:21,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:21,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:21,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:21,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -638319396, now seen corresponding path program 1 times [2023-11-19 07:58:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:21,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816360546] [2023-11-19 07:58:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:22,297 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 07:58:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:22,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816360546] [2023-11-19 07:58:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816360546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:22,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793562583] [2023-11-19 07:58:22,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:22,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 833 [2023-11-19 07:58:22,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 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 07:58:22,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:22,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 833 [2023-11-19 07:58:22,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:24,378 INFO L124 PetriNetUnfolderBase]: 5986/10602 cut-off events. [2023-11-19 07:58:24,378 INFO L125 PetriNetUnfolderBase]: For 1549/1549 co-relation queries the response was YES. [2023-11-19 07:58:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 10602 events. 5986/10602 cut-off events. For 1549/1549 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 81058 event pairs, 1250 based on Foata normal form. 0/9345 useless extension candidates. Maximal degree in co-relation 20782. Up to 4044 conditions per place. [2023-11-19 07:58:24,481 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 134 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2023-11-19 07:58:24,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 199 transitions, 736 flow [2023-11-19 07:58:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2412 transitions. [2023-11-19 07:58:24,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48259303721488594 [2023-11-19 07:58:24,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2412 transitions. [2023-11-19 07:58:24,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2412 transitions. [2023-11-19 07:58:24,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:24,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2412 transitions. [2023-11-19 07:58:24,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 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 07:58:24,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:24,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:24,520 INFO L175 Difference]: Start difference. First operand has 118 places, 113 transitions, 262 flow. Second operand 6 states and 2412 transitions. [2023-11-19 07:58:24,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 199 transitions, 736 flow [2023-11-19 07:58:24,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 199 transitions, 721 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:58:24,541 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 261 flow [2023-11-19 07:58:24,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2023-11-19 07:58:24,542 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -32 predicate places. [2023-11-19 07:58:24,542 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 261 flow [2023-11-19 07:58:24,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 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 07:58:24,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:24,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:24,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:24,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:24,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 755426750, now seen corresponding path program 1 times [2023-11-19 07:58:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087287823] [2023-11-19 07:58:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:24,600 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 07:58:24,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:24,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087287823] [2023-11-19 07:58:24,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087287823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092584214] [2023-11-19 07:58:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:24,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 833 [2023-11-19 07:58:24,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 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 07:58:24,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:24,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 833 [2023-11-19 07:58:24,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:25,645 INFO L124 PetriNetUnfolderBase]: 3895/8687 cut-off events. [2023-11-19 07:58:25,645 INFO L125 PetriNetUnfolderBase]: For 714/714 co-relation queries the response was YES. [2023-11-19 07:58:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 8687 events. 3895/8687 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 75858 event pairs, 2647 based on Foata normal form. 0/7835 useless extension candidates. Maximal degree in co-relation 14932. Up to 5319 conditions per place. [2023-11-19 07:58:25,705 INFO L140 encePairwiseOnDemand]: 829/833 looper letters, 44 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-19 07:58:25,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 345 flow [2023-11-19 07:58:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1218 transitions. [2023-11-19 07:58:25,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2023-11-19 07:58:25,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1218 transitions. [2023-11-19 07:58:25,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1218 transitions. [2023-11-19 07:58:25,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:25,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1218 transitions. [2023-11-19 07:58:25,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 0 states have call successors, (0), 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 07:58:25,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:25,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 07:58:25,724 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 261 flow. Second operand 3 states and 1218 transitions. [2023-11-19 07:58:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 345 flow [2023-11-19 07:58:25,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 335 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:58:25,731 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 247 flow [2023-11-19 07:58:25,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2023-11-19 07:58:25,732 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -38 predicate places. [2023-11-19 07:58:25,732 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 247 flow [2023-11-19 07:58:25,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 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 07:58:25,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:25,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:58:25,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:25,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -810739810, now seen corresponding path program 1 times [2023-11-19 07:58:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943534610] [2023-11-19 07:58:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:25,949 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 07:58:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943534610] [2023-11-19 07:58:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943534610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86341773] [2023-11-19 07:58:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:25,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:25,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:25,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:26,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:58:26,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:26,227 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 07:58:26,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:26,302 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 07:58:26,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86341773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:26,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:26,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:58:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2177706] [2023-11-19 07:58:26,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:58:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:58:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:58:27,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 833 [2023-11-19 07:58:27,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 247 flow. Second operand has 13 states, 13 states have (on average 380.46153846153845) internal successors, (4946), 13 states have internal predecessors, (4946), 0 states have call successors, (0), 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 07:58:27,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:27,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 833 [2023-11-19 07:58:27,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:28,310 INFO L124 PetriNetUnfolderBase]: 3979/8632 cut-off events. [2023-11-19 07:58:28,310 INFO L125 PetriNetUnfolderBase]: For 821/822 co-relation queries the response was YES. [2023-11-19 07:58:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15124 conditions, 8632 events. 3979/8632 cut-off events. For 821/822 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 76011 event pairs, 2381 based on Foata normal form. 199/7653 useless extension candidates. Maximal degree in co-relation 15118. Up to 3703 conditions per place. [2023-11-19 07:58:28,381 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 92 selfloop transitions, 7 changer transitions 0/165 dead transitions. [2023-11-19 07:58:28,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 165 transitions, 583 flow [2023-11-19 07:58:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:58:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2749 transitions. [2023-11-19 07:58:28,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47144572114560107 [2023-11-19 07:58:28,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2749 transitions. [2023-11-19 07:58:28,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2749 transitions. [2023-11-19 07:58:28,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:28,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2749 transitions. [2023-11-19 07:58:28,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 392.7142857142857) internal successors, (2749), 7 states have internal predecessors, (2749), 0 states have call successors, (0), 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 07:58:28,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 07:58:28,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 07:58:28,419 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 247 flow. Second operand 7 states and 2749 transitions. [2023-11-19 07:58:28,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 165 transitions, 583 flow [2023-11-19 07:58:28,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:28,423 INFO L231 Difference]: Finished difference. Result has 120 places, 113 transitions, 300 flow [2023-11-19 07:58:28,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=120, PETRI_TRANSITIONS=113} [2023-11-19 07:58:28,424 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -29 predicate places. [2023-11-19 07:58:28,425 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 113 transitions, 300 flow [2023-11-19 07:58:28,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 380.46153846153845) internal successors, (4946), 13 states have internal predecessors, (4946), 0 states have call successors, (0), 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 07:58:28,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:28,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:28,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:28,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:28,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:28,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 392687466, now seen corresponding path program 2 times [2023-11-19 07:58:28,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:28,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315755270] [2023-11-19 07:58:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:58:29,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:29,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315755270] [2023-11-19 07:58:29,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315755270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:29,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:29,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129492770] [2023-11-19 07:58:29,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:29,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:29,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 833 [2023-11-19 07:58:29,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 113 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 381.3333333333333) internal successors, (2288), 6 states have internal predecessors, (2288), 0 states have call successors, (0), 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 07:58:29,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:29,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 833 [2023-11-19 07:58:29,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:31,523 INFO L124 PetriNetUnfolderBase]: 7597/13604 cut-off events. [2023-11-19 07:58:31,523 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2023-11-19 07:58:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26622 conditions, 13604 events. 7597/13604 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 110254 event pairs, 2198 based on Foata normal form. 0/12048 useless extension candidates. Maximal degree in co-relation 26612. Up to 4526 conditions per place. [2023-11-19 07:58:31,623 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 139 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2023-11-19 07:58:31,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 199 transitions, 776 flow [2023-11-19 07:58:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2412 transitions. [2023-11-19 07:58:31,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48259303721488594 [2023-11-19 07:58:31,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2412 transitions. [2023-11-19 07:58:31,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2412 transitions. [2023-11-19 07:58:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2412 transitions. [2023-11-19 07:58:31,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 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 07:58:31,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:31,652 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:31,652 INFO L175 Difference]: Start difference. First operand has 120 places, 113 transitions, 300 flow. Second operand 6 states and 2412 transitions. [2023-11-19 07:58:31,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 199 transitions, 776 flow [2023-11-19 07:58:31,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 199 transitions, 766 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:31,661 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 296 flow [2023-11-19 07:58:31,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-11-19 07:58:31,662 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -28 predicate places. [2023-11-19 07:58:31,662 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 296 flow [2023-11-19 07:58:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 381.3333333333333) internal successors, (2288), 6 states have internal predecessors, (2288), 0 states have call successors, (0), 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 07:58:31,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:31,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:31,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:58:31,664 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:31,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1583922141, now seen corresponding path program 1 times [2023-11-19 07:58:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458399193] [2023-11-19 07:58:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,034 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 07:58:32,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458399193] [2023-11-19 07:58:32,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458399193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:32,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:32,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060949808] [2023-11-19 07:58:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:32,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:32,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 833 [2023-11-19 07:58:32,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 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 07:58:32,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:32,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 833 [2023-11-19 07:58:32,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:34,142 INFO L124 PetriNetUnfolderBase]: 6577/11097 cut-off events. [2023-11-19 07:58:34,142 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-11-19 07:58:34,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23889 conditions, 11097 events. 6577/11097 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 84130 event pairs, 2036 based on Foata normal form. 0/9963 useless extension candidates. Maximal degree in co-relation 23879. Up to 4004 conditions per place. [2023-11-19 07:58:34,241 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 134 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2023-11-19 07:58:34,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 193 transitions, 826 flow [2023-11-19 07:58:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2399 transitions. [2023-11-19 07:58:34,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799919967987195 [2023-11-19 07:58:34,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2399 transitions. [2023-11-19 07:58:34,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2399 transitions. [2023-11-19 07:58:34,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:34,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2399 transitions. [2023-11-19 07:58:34,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 399.8333333333333) internal successors, (2399), 6 states have internal predecessors, (2399), 0 states have call successors, (0), 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 07:58:34,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:34,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:34,270 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 296 flow. Second operand 6 states and 2399 transitions. [2023-11-19 07:58:34,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 193 transitions, 826 flow [2023-11-19 07:58:34,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 193 transitions, 808 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:58:34,286 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 292 flow [2023-11-19 07:58:34,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2023-11-19 07:58:34,287 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -30 predicate places. [2023-11-19 07:58:34,287 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 292 flow [2023-11-19 07:58:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 382.0) internal successors, (2292), 6 states have internal predecessors, (2292), 0 states have call successors, (0), 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 07:58:34,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:34,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:58:34,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:34,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash -394642228, now seen corresponding path program 1 times [2023-11-19 07:58:34,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:34,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467453563] [2023-11-19 07:58:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:34,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:34,491 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 07:58:34,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:34,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467453563] [2023-11-19 07:58:34,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467453563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433856651] [2023-11-19 07:58:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:34,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:34,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:34,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:34,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:34,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:34,681 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 07:58:34,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:34,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433856651] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:58:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-19 07:58:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94238886] [2023-11-19 07:58:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:34,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:58:34,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 833 [2023-11-19 07:58:34,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 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 07:58:34,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:34,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 833 [2023-11-19 07:58:34,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:36,026 INFO L124 PetriNetUnfolderBase]: 4175/10149 cut-off events. [2023-11-19 07:58:36,026 INFO L125 PetriNetUnfolderBase]: For 2658/2700 co-relation queries the response was YES. [2023-11-19 07:58:36,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18776 conditions, 10149 events. 4175/10149 cut-off events. For 2658/2700 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 91460 event pairs, 1471 based on Foata normal form. 242/9519 useless extension candidates. Maximal degree in co-relation 18766. Up to 3309 conditions per place. [2023-11-19 07:58:36,097 INFO L140 encePairwiseOnDemand]: 827/833 looper letters, 68 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2023-11-19 07:58:36,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 135 transitions, 517 flow [2023-11-19 07:58:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:58:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1969 transitions. [2023-11-19 07:58:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47274909963985595 [2023-11-19 07:58:36,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1969 transitions. [2023-11-19 07:58:36,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1969 transitions. [2023-11-19 07:58:36,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:36,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1969 transitions. [2023-11-19 07:58:36,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 393.8) internal successors, (1969), 5 states have internal predecessors, (1969), 0 states have call successors, (0), 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 07:58:36,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 833.0) internal successors, (4998), 6 states have internal predecessors, (4998), 0 states have call successors, (0), 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 07:58:36,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 833.0) internal successors, (4998), 6 states have internal predecessors, (4998), 0 states have call successors, (0), 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 07:58:36,122 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 292 flow. Second operand 5 states and 1969 transitions. [2023-11-19 07:58:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 135 transitions, 517 flow [2023-11-19 07:58:36,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 505 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:58:36,134 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 307 flow [2023-11-19 07:58:36,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2023-11-19 07:58:36,135 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -29 predicate places. [2023-11-19 07:58:36,135 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 307 flow [2023-11-19 07:58:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 383.8) internal successors, (1919), 5 states have internal predecessors, (1919), 0 states have call successors, (0), 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 07:58:36,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:36,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:36,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:36,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e37399a-c1eb-4f76-9303-9ebb87b88438/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:58:36,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:36,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -949774310, now seen corresponding path program 1 times [2023-11-19 07:58:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843816778] [2023-11-19 07:58:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:58:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843816778] [2023-11-19 07:58:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843816778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:36,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:36,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295245281] [2023-11-19 07:58:36,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:37,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 833 [2023-11-19 07:58:37,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 389.5) internal successors, (2337), 6 states have internal predecessors, (2337), 0 states have call successors, (0), 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 07:58:37,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:37,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 833 [2023-11-19 07:58:37,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:38,799 INFO L124 PetriNetUnfolderBase]: 4828/9362 cut-off events. [2023-11-19 07:58:38,799 INFO L125 PetriNetUnfolderBase]: For 5680/5680 co-relation queries the response was YES. [2023-11-19 07:58:38,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20354 conditions, 9362 events. 4828/9362 cut-off events. For 5680/5680 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 74662 event pairs, 2705 based on Foata normal form. 0/8373 useless extension candidates. Maximal degree in co-relation 20342. Up to 5325 conditions per place. [2023-11-19 07:58:38,851 INFO L140 encePairwiseOnDemand]: 828/833 looper letters, 124 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2023-11-19 07:58:38,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 185 transitions, 777 flow [2023-11-19 07:58:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2428 transitions. [2023-11-19 07:58:38,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579431772709086 [2023-11-19 07:58:38,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2428 transitions. [2023-11-19 07:58:38,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2428 transitions. [2023-11-19 07:58:38,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:38,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2428 transitions. [2023-11-19 07:58:38,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.6666666666667) internal successors, (2428), 6 states have internal predecessors, (2428), 0 states have call successors, (0), 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 07:58:38,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:38,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 07:58:38,875 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 307 flow. Second operand 6 states and 2428 transitions. [2023-11-19 07:58:38,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 185 transitions, 777 flow [2023-11-19 07:58:38,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 185 transitions, 771 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:58:38,884 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 307 flow [2023-11-19 07:58:38,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2023-11-19 07:58:38,885 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -28 predicate places. [2023-11-19 07:58:38,886 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 307 flow [2023-11-19 07:58:38,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 389.5) internal successors, (2337), 6 states have internal predecessors, (2337), 0 states have call successors, (0), 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 07:58:38,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:38,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:58:38,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-19 07:58:38,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1451324981, now seen corresponding path program 1 times [2023-11-19 07:58:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880056518] [2023-11-19 07:58:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:58:39,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:39,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880056518] [2023-11-19 07:58:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880056518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96917774] [2023-11-19 07:58:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:39,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 833 [2023-11-19 07:58:39,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 390.1666666666667) internal successors, (2341), 6 states have internal predecessors, (2341), 0 states have call successors, (0), 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 07:58:39,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:39,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 833 [2023-11-19 07:58:39,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand