./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/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_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/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_469024ed-495e-4cc1-a021-8e2444705e8a/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 e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:43,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:43,161 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:42:43,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:43,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:43,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:43,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:43,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:43,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:43,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:43,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:43,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:43,215 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:43,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:43,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:43,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:42:43,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:43,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:42:43,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:43,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:43,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:43,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:43,221 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:42:43,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:42:43,222 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:42:43,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:43,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:43,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:43,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:43,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:43,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:43,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:43,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:43,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:43,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:43,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:43,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:43,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:43,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:43,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:43,228 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:43,228 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_469024ed-495e-4cc1-a021-8e2444705e8a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2023-11-19 07:42:43,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:43,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:43,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:43,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:43,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:43,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:42:46,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:47,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:47,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:42:47,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/data/5a6dbc55a/f4bd4b947e354630aea49ee99f33ef01/FLAG2c0e6cddc [2023-11-19 07:42:47,231 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/data/5a6dbc55a/f4bd4b947e354630aea49ee99f33ef01 [2023-11-19 07:42:47,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:47,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:47,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:47,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:47,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:47,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d2bf36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47, skipping insertion in model container [2023-11-19 07:42:47,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:47,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:47,531 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:47,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:47,587 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:47,587 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:47,595 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:47,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47 WrapperNode [2023-11-19 07:42:47,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:47,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:47,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:47,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:47,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,660 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 178 [2023-11-19 07:42:47,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:47,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:47,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:47,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:47,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:47,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:47,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:47,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:47,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (1/1) ... [2023-11-19 07:42:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:47,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:47,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_469024ed-495e-4cc1-a021-8e2444705e8a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:42:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:42:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:42:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:42:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:42:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:42:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:42:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:42:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:42:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:42:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:42:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:47,824 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 07:42:47,955 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:47,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:48,702 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:48,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:48,826 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 07:42:48,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:48 BoogieIcfgContainer [2023-11-19 07:42:48,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:48,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:48,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:48,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:48,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:47" (1/3) ... [2023-11-19 07:42:48,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d99d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:48, skipping insertion in model container [2023-11-19 07:42:48,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:47" (2/3) ... [2023-11-19 07:42:48,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d99d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:48, skipping insertion in model container [2023-11-19 07:42:48,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:48" (3/3) ... [2023-11-19 07:42:48,841 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-19 07:42:48,851 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:42:48,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:48,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:42:48,864 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:42:48,957 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:42:49,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 295 transitions, 611 flow [2023-11-19 07:42:49,186 INFO L124 PetriNetUnfolderBase]: 16/292 cut-off events. [2023-11-19 07:42:49,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:42:49,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 292 events. 16/292 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 388 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-11-19 07:42:49,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 295 transitions, 611 flow [2023-11-19 07:42:49,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 269 transitions, 556 flow [2023-11-19 07:42:49,218 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:42:49,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 269 transitions, 556 flow [2023-11-19 07:42:49,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 269 transitions, 556 flow [2023-11-19 07:42:49,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 269 transitions, 556 flow [2023-11-19 07:42:49,381 INFO L124 PetriNetUnfolderBase]: 15/269 cut-off events. [2023-11-19 07:42:49,382 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:42:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 15/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 387 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-11-19 07:42:49,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 7636 [2023-11-19 07:42:58,872 INFO L134 LiptonReduction]: Checked pairs total: 44601 [2023-11-19 07:42:58,872 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-11-19 07:42:58,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:58,898 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;@74fbd9f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:58,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-19 07:42:58,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:42:58,900 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:42:58,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:58,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:58,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:42:58,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:42:58,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1105, now seen corresponding path program 1 times [2023-11-19 07:42:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131755820] [2023-11-19 07:42:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:58,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:59,068 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 07:42:59,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:59,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131755820] [2023-11-19 07:42:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131755820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:42:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314721015] [2023-11-19 07:42:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:42:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:42:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:42:59,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 543 [2023-11-19 07:42:59,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 07:42:59,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:59,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 543 [2023-11-19 07:42:59,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:59,458 INFO L124 PetriNetUnfolderBase]: 733/1530 cut-off events. [2023-11-19 07:42:59,460 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-19 07:42:59,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 1530 events. 733/1530 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9229 event pairs, 511 based on Foata normal form. 185/1424 useless extension candidates. Maximal degree in co-relation 2150. Up to 1038 conditions per place. [2023-11-19 07:42:59,481 INFO L140 encePairwiseOnDemand]: 518/543 looper letters, 30 selfloop transitions, 0 changer transitions 1/63 dead transitions. [2023-11-19 07:42:59,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 206 flow [2023-11-19 07:42:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:42:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:42:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 584 transitions. [2023-11-19 07:42:59,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377532228360957 [2023-11-19 07:42:59,512 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 584 transitions. [2023-11-19 07:42:59,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 584 transitions. [2023-11-19 07:42:59,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:59,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 584 transitions. [2023-11-19 07:42:59,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 292.0) internal successors, (584), 2 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:59,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 543.0) internal successors, (1629), 3 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 07:42:59,541 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 543.0) internal successors, (1629), 3 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 07:42:59,544 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 194 flow. Second operand 2 states and 584 transitions. [2023-11-19 07:42:59,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 206 flow [2023-11-19 07:42:59,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:42:59,554 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 129 flow [2023-11-19 07:42:59,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-19 07:42:59,562 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -27 predicate places. [2023-11-19 07:42:59,563 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 129 flow [2023-11-19 07:42:59,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 07:42:59,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:59,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:59,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:59,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:42:59,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:59,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1011418454, now seen corresponding path program 1 times [2023-11-19 07:42:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550065805] [2023-11-19 07:42:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:59,792 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 07:42:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550065805] [2023-11-19 07:42:59,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550065805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170590138] [2023-11-19 07:42:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:59,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:59,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 543 [2023-11-19 07:42:59,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 07:42:59,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:59,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 543 [2023-11-19 07:42:59,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:00,223 INFO L124 PetriNetUnfolderBase]: 1481/2526 cut-off events. [2023-11-19 07:43:00,223 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:43:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2526 events. 1481/2526 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12475 event pairs, 1125 based on Foata normal form. 0/1993 useless extension candidates. Maximal degree in co-relation 4653. Up to 2084 conditions per place. [2023-11-19 07:43:00,249 INFO L140 encePairwiseOnDemand]: 539/543 looper letters, 33 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-11-19 07:43:00,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 191 flow [2023-11-19 07:43:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-11-19 07:43:00,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47391037446286066 [2023-11-19 07:43:00,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-11-19 07:43:00,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-11-19 07:43:00,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:00,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-11-19 07:43:00,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 07:43:00,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 07:43:00,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 07:43:00,309 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 129 flow. Second operand 3 states and 772 transitions. [2023-11-19 07:43:00,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 191 flow [2023-11-19 07:43:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 191 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:00,312 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 125 flow [2023-11-19 07:43:00,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-11-19 07:43:00,313 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -29 predicate places. [2023-11-19 07:43:00,314 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 125 flow [2023-11-19 07:43:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 07:43:00,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:00,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:00,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:00,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1310747657, now seen corresponding path program 1 times [2023-11-19 07:43:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298824157] [2023-11-19 07:43:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:00,396 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 07:43:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298824157] [2023-11-19 07:43:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298824157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:00,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601536614] [2023-11-19 07:43:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:00,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 543 [2023-11-19 07:43:00,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 07:43:00,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:00,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 543 [2023-11-19 07:43:00,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:00,876 INFO L124 PetriNetUnfolderBase]: 1284/2472 cut-off events. [2023-11-19 07:43:00,877 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:43:00,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 2472 events. 1284/2472 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15243 event pairs, 311 based on Foata normal form. 0/2121 useless extension candidates. Maximal degree in co-relation 4333. Up to 1255 conditions per place. [2023-11-19 07:43:00,902 INFO L140 encePairwiseOnDemand]: 540/543 looper letters, 51 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-19 07:43:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 277 flow [2023-11-19 07:43:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-11-19 07:43:00,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119705340699816 [2023-11-19 07:43:00,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-11-19 07:43:00,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-11-19 07:43:00,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:00,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-11-19 07:43:00,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 07:43:00,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 07:43:00,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states 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 07:43:00,920 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 125 flow. Second operand 3 states and 834 transitions. [2023-11-19 07:43:00,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 277 flow [2023-11-19 07:43:00,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:00,925 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 136 flow [2023-11-19 07:43:00,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-11-19 07:43:00,927 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -28 predicate places. [2023-11-19 07:43:00,928 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 136 flow [2023-11-19 07:43:00,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 07:43:00,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:00,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:00,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:00,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:00,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1505613482, now seen corresponding path program 1 times [2023-11-19 07:43:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093650072] [2023-11-19 07:43:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:01,581 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 07:43:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:01,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093650072] [2023-11-19 07:43:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093650072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:01,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085549030] [2023-11-19 07:43:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:01,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 543 [2023-11-19 07:43:01,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states 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 07:43:01,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:01,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 543 [2023-11-19 07:43:01,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:03,230 INFO L124 PetriNetUnfolderBase]: 5081/7552 cut-off events. [2023-11-19 07:43:03,231 INFO L125 PetriNetUnfolderBase]: For 863/877 co-relation queries the response was YES. [2023-11-19 07:43:03,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15561 conditions, 7552 events. 5081/7552 cut-off events. For 863/877 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 42765 event pairs, 1384 based on Foata normal form. 0/6261 useless extension candidates. Maximal degree in co-relation 15557. Up to 3475 conditions per place. [2023-11-19 07:43:03,300 INFO L140 encePairwiseOnDemand]: 536/543 looper letters, 101 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2023-11-19 07:43:03,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 136 transitions, 558 flow [2023-11-19 07:43:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2023-11-19 07:43:03,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852670349907919 [2023-11-19 07:43:03,308 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2023-11-19 07:43:03,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2023-11-19 07:43:03,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:03,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2023-11-19 07:43:03,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states 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 07:43:03,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:03,326 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:03,327 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 136 flow. Second operand 6 states and 1581 transitions. [2023-11-19 07:43:03,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 136 transitions, 558 flow [2023-11-19 07:43:03,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 136 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:03,334 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 246 flow [2023-11-19 07:43:03,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-11-19 07:43:03,336 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -18 predicate places. [2023-11-19 07:43:03,337 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 246 flow [2023-11-19 07:43:03,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states 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 07:43:03,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:03,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:03,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:03,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1361111091, now seen corresponding path program 1 times [2023-11-19 07:43:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266650998] [2023-11-19 07:43:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:03,507 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 07:43:03,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:03,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266650998] [2023-11-19 07:43:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266650998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255566566] [2023-11-19 07:43:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:03,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 543 [2023-11-19 07:43:03,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 07:43:03,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:03,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 543 [2023-11-19 07:43:03,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:04,965 INFO L124 PetriNetUnfolderBase]: 3610/6716 cut-off events. [2023-11-19 07:43:04,966 INFO L125 PetriNetUnfolderBase]: For 4544/4895 co-relation queries the response was YES. [2023-11-19 07:43:04,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14683 conditions, 6716 events. 3610/6716 cut-off events. For 4544/4895 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 49432 event pairs, 1963 based on Foata normal form. 0/5574 useless extension candidates. Maximal degree in co-relation 14674. Up to 3183 conditions per place. [2023-11-19 07:43:05,029 INFO L140 encePairwiseOnDemand]: 535/543 looper letters, 91 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2023-11-19 07:43:05,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 132 transitions, 695 flow [2023-11-19 07:43:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2023-11-19 07:43:05,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47575199508901167 [2023-11-19 07:43:05,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2023-11-19 07:43:05,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2023-11-19 07:43:05,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:05,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2023-11-19 07:43:05,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 07:43:05,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:05,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:05,054 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 246 flow. Second operand 6 states and 1550 transitions. [2023-11-19 07:43:05,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 132 transitions, 695 flow [2023-11-19 07:43:05,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 132 transitions, 695 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:05,071 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 306 flow [2023-11-19 07:43:05,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-11-19 07:43:05,074 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -9 predicate places. [2023-11-19 07:43:05,074 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 306 flow [2023-11-19 07:43:05,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 07:43:05,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:05,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:43:05,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:05,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1044687116, now seen corresponding path program 1 times [2023-11-19 07:43:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029331222] [2023-11-19 07:43:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:05,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029331222] [2023-11-19 07:43:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029331222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:05,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:05,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748422179] [2023-11-19 07:43:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:05,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:05,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 543 [2023-11-19 07:43:05,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states 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 07:43:05,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:05,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 543 [2023-11-19 07:43:05,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:07,977 INFO L124 PetriNetUnfolderBase]: 6393/10839 cut-off events. [2023-11-19 07:43:07,977 INFO L125 PetriNetUnfolderBase]: For 8891/9785 co-relation queries the response was YES. [2023-11-19 07:43:08,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25351 conditions, 10839 events. 6393/10839 cut-off events. For 8891/9785 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 78250 event pairs, 2849 based on Foata normal form. 2/9088 useless extension candidates. Maximal degree in co-relation 25337. Up to 7293 conditions per place. [2023-11-19 07:43:08,096 INFO L140 encePairwiseOnDemand]: 536/543 looper letters, 107 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2023-11-19 07:43:08,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 159 transitions, 850 flow [2023-11-19 07:43:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1570 transitions. [2023-11-19 07:43:08,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48189073050951503 [2023-11-19 07:43:08,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1570 transitions. [2023-11-19 07:43:08,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1570 transitions. [2023-11-19 07:43:08,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:08,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1570 transitions. [2023-11-19 07:43:08,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states 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 07:43:08,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:08,120 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:08,121 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 306 flow. Second operand 6 states and 1570 transitions. [2023-11-19 07:43:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 159 transitions, 850 flow [2023-11-19 07:43:08,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 159 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:08,137 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 564 flow [2023-11-19 07:43:08,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-11-19 07:43:08,140 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 0 predicate places. [2023-11-19 07:43:08,140 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 564 flow [2023-11-19 07:43:08,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states 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 07:43:08,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:08,141 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 07:43:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:43:08,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:08,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1451555819, now seen corresponding path program 1 times [2023-11-19 07:43:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074220144] [2023-11-19 07:43:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:08,478 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 07:43:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074220144] [2023-11-19 07:43:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074220144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853029339] [2023-11-19 07:43:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:08,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:08,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 543 [2023-11-19 07:43:08,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 07:43:08,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:08,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 543 [2023-11-19 07:43:08,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:10,105 INFO L124 PetriNetUnfolderBase]: 3671/6622 cut-off events. [2023-11-19 07:43:10,106 INFO L125 PetriNetUnfolderBase]: For 10323/11452 co-relation queries the response was YES. [2023-11-19 07:43:10,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17153 conditions, 6622 events. 3671/6622 cut-off events. For 10323/11452 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 47868 event pairs, 1901 based on Foata normal form. 114/5480 useless extension candidates. Maximal degree in co-relation 17134. Up to 4674 conditions per place. [2023-11-19 07:43:10,187 INFO L140 encePairwiseOnDemand]: 535/543 looper letters, 90 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-11-19 07:43:10,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 839 flow [2023-11-19 07:43:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1545 transitions. [2023-11-19 07:43:10,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421731123388583 [2023-11-19 07:43:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1545 transitions. [2023-11-19 07:43:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1545 transitions. [2023-11-19 07:43:10,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:10,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1545 transitions. [2023-11-19 07:43:10,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states 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 07:43:10,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:10,218 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:10,218 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 564 flow. Second operand 6 states and 1545 transitions. [2023-11-19 07:43:10,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 839 flow [2023-11-19 07:43:10,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 799 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:10,240 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 566 flow [2023-11-19 07:43:10,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2023-11-19 07:43:10,243 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2023-11-19 07:43:10,243 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 566 flow [2023-11-19 07:43:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 07:43:10,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:10,244 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 07:43:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:43:10,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:10,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:10,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1976835982, now seen corresponding path program 1 times [2023-11-19 07:43:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973725121] [2023-11-19 07:43:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:10,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:10,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:10,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973725121] [2023-11-19 07:43:10,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973725121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:10,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:10,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:43:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45677841] [2023-11-19 07:43:10,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:10,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:43:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:43:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:43:11,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 543 [2023-11-19 07:43:11,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 566 flow. Second operand has 10 states, 10 states have (on average 237.8) internal successors, (2378), 10 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states 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 07:43:11,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:11,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 543 [2023-11-19 07:43:11,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:13,806 INFO L124 PetriNetUnfolderBase]: 7719/12106 cut-off events. [2023-11-19 07:43:13,806 INFO L125 PetriNetUnfolderBase]: For 11264/12508 co-relation queries the response was YES. [2023-11-19 07:43:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33858 conditions, 12106 events. 7719/12106 cut-off events. For 11264/12508 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 78963 event pairs, 1058 based on Foata normal form. 547/11030 useless extension candidates. Maximal degree in co-relation 33836. Up to 3652 conditions per place. [2023-11-19 07:43:13,937 INFO L140 encePairwiseOnDemand]: 536/543 looper letters, 168 selfloop transitions, 11 changer transitions 0/204 dead transitions. [2023-11-19 07:43:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 204 transitions, 1368 flow [2023-11-19 07:43:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:43:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:43:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1984 transitions. [2023-11-19 07:43:13,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567219152854512 [2023-11-19 07:43:13,946 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1984 transitions. [2023-11-19 07:43:13,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1984 transitions. [2023-11-19 07:43:13,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:13,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1984 transitions. [2023-11-19 07:43:13,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 07:43:13,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:13,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:13,966 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 566 flow. Second operand 8 states and 1984 transitions. [2023-11-19 07:43:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 204 transitions, 1368 flow [2023-11-19 07:43:14,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 204 transitions, 1348 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:43:14,121 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 564 flow [2023-11-19 07:43:14,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2023-11-19 07:43:14,124 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2023-11-19 07:43:14,125 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 564 flow [2023-11-19 07:43:14,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 237.8) internal successors, (2378), 10 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states 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 07:43:14,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:14,126 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 07:43:14,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:43:14,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:14,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1662215720, now seen corresponding path program 1 times [2023-11-19 07:43:14,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51326624] [2023-11-19 07:43:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:14,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51326624] [2023-11-19 07:43:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51326624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:14,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:14,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:43:14,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171734850] [2023-11-19 07:43:14,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:43:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:43:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:43:15,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 543 [2023-11-19 07:43:15,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 236.75) internal successors, (1894), 8 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 07:43:15,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:15,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 543 [2023-11-19 07:43:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:18,090 INFO L124 PetriNetUnfolderBase]: 10086/18127 cut-off events. [2023-11-19 07:43:18,090 INFO L125 PetriNetUnfolderBase]: For 28352/31649 co-relation queries the response was YES. [2023-11-19 07:43:18,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49739 conditions, 18127 events. 10086/18127 cut-off events. For 28352/31649 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 148492 event pairs, 1985 based on Foata normal form. 483/16039 useless extension candidates. Maximal degree in co-relation 49718. Up to 5740 conditions per place. [2023-11-19 07:43:18,278 INFO L140 encePairwiseOnDemand]: 533/543 looper letters, 171 selfloop transitions, 54 changer transitions 0/258 dead transitions. [2023-11-19 07:43:18,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 258 transitions, 1975 flow [2023-11-19 07:43:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:43:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:43:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1978 transitions. [2023-11-19 07:43:18,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553406998158379 [2023-11-19 07:43:18,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1978 transitions. [2023-11-19 07:43:18,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1978 transitions. [2023-11-19 07:43:18,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:18,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1978 transitions. [2023-11-19 07:43:18,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.25) internal successors, (1978), 8 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states 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 07:43:18,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:18,318 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:18,318 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 564 flow. Second operand 8 states and 1978 transitions. [2023-11-19 07:43:18,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 258 transitions, 1975 flow [2023-11-19 07:43:18,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 258 transitions, 1955 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:43:18,456 INFO L231 Difference]: Finished difference. Result has 103 places, 151 transitions, 1160 flow [2023-11-19 07:43:18,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1160, PETRI_PLACES=103, PETRI_TRANSITIONS=151} [2023-11-19 07:43:18,457 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 14 predicate places. [2023-11-19 07:43:18,457 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 151 transitions, 1160 flow [2023-11-19 07:43:18,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 236.75) internal successors, (1894), 8 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 07:43:18,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:18,459 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 07:43:18,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:43:18,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:18,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1518000430, now seen corresponding path program 2 times [2023-11-19 07:43:18,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:18,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101970765] [2023-11-19 07:43:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:43:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:19,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101970765] [2023-11-19 07:43:19,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101970765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:19,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:19,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:43:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909001181] [2023-11-19 07:43:19,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:19,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:43:19,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:19,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:43:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:43:19,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 543 [2023-11-19 07:43:19,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 151 transitions, 1160 flow. Second operand has 8 states, 8 states have (on average 236.75) internal successors, (1894), 8 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 07:43:19,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:19,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 543 [2023-11-19 07:43:19,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:24,187 INFO L124 PetriNetUnfolderBase]: 14938/26160 cut-off events. [2023-11-19 07:43:24,187 INFO L125 PetriNetUnfolderBase]: For 75163/84270 co-relation queries the response was YES. [2023-11-19 07:43:24,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83938 conditions, 26160 events. 14938/26160 cut-off events. For 75163/84270 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 225416 event pairs, 3852 based on Foata normal form. 1625/24849 useless extension candidates. Maximal degree in co-relation 83913. Up to 12138 conditions per place. [2023-11-19 07:43:24,427 INFO L140 encePairwiseOnDemand]: 533/543 looper letters, 210 selfloop transitions, 59 changer transitions 0/302 dead transitions. [2023-11-19 07:43:24,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 302 transitions, 2831 flow [2023-11-19 07:43:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:43:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:43:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1979 transitions. [2023-11-19 07:43:24,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555709023941068 [2023-11-19 07:43:24,443 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1979 transitions. [2023-11-19 07:43:24,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1979 transitions. [2023-11-19 07:43:24,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:24,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1979 transitions. [2023-11-19 07:43:24,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.375) internal successors, (1979), 8 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states 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 07:43:24,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:24,468 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 543.0) internal successors, (4887), 9 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states 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 07:43:24,468 INFO L175 Difference]: Start difference. First operand has 103 places, 151 transitions, 1160 flow. Second operand 8 states and 1979 transitions. [2023-11-19 07:43:24,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 302 transitions, 2831 flow [2023-11-19 07:43:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 302 transitions, 2826 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:24,768 INFO L231 Difference]: Finished difference. Result has 112 places, 199 transitions, 1898 flow [2023-11-19 07:43:24,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1898, PETRI_PLACES=112, PETRI_TRANSITIONS=199} [2023-11-19 07:43:24,769 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 23 predicate places. [2023-11-19 07:43:24,769 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 199 transitions, 1898 flow [2023-11-19 07:43:24,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 236.75) internal successors, (1894), 8 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 07:43:24,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:24,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:24,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:43:24,771 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-19 07:43:24,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:24,771 INFO L85 PathProgramCache]: Analyzing trace with hash -402529911, now seen corresponding path program 1 times [2023-11-19 07:43:24,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:24,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616145161] [2023-11-19 07:43:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:24,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:25,104 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 07:43:25,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:25,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616145161] [2023-11-19 07:43:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616145161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:25,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:25,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:25,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331705853] [2023-11-19 07:43:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:25,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:25,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:25,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 543 [2023-11-19 07:43:25,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 199 transitions, 1898 flow. Second operand has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states 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 07:43:25,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:25,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 543 [2023-11-19 07:43:25,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:30,953 INFO L124 PetriNetUnfolderBase]: 15666/27684 cut-off events. [2023-11-19 07:43:30,954 INFO L125 PetriNetUnfolderBase]: For 114679/124940 co-relation queries the response was YES. [2023-11-19 07:43:31,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100172 conditions, 27684 events. 15666/27684 cut-off events. For 114679/124940 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 239196 event pairs, 6241 based on Foata normal form. 28/24913 useless extension candidates. Maximal degree in co-relation 100143. Up to 18222 conditions per place. [2023-11-19 07:43:31,221 INFO L140 encePairwiseOnDemand]: 536/543 looper letters, 224 selfloop transitions, 17 changer transitions 0/269 dead transitions. [2023-11-19 07:43:31,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 269 transitions, 2849 flow [2023-11-19 07:43:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1559 transitions. [2023-11-19 07:43:31,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785144260282382 [2023-11-19 07:43:31,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1559 transitions. [2023-11-19 07:43:31,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1559 transitions. [2023-11-19 07:43:31,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:31,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1559 transitions. [2023-11-19 07:43:31,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.8333333333333) internal successors, (1559), 6 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 07:43:31,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:31,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 543.0) internal successors, (3801), 7 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states 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 07:43:31,242 INFO L175 Difference]: Start difference. First operand has 112 places, 199 transitions, 1898 flow. Second operand 6 states and 1559 transitions. [2023-11-19 07:43:31,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 269 transitions, 2849 flow