./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --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_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/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_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/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_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:26,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:26,545 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:43:26,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:26,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:26,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:26,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:26,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:26,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:26,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:26,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:26,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:26,599 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:26,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:26,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:26,601 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:26,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:26,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:26,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:26,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:26,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:26,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:26,605 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:43:26,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:26,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:26,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:26,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:26,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:26,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:26,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:26,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:26,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:26,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:26,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:26,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:26,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:26,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:26,615 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:26,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:26,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:26,616 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:26,616 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_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2023-11-19 07:43:26,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:27,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:27,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:27,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:27,016 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:27,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-19 07:43:30,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:30,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:30,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-19 07:43:30,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/data/ea84b4882/de73727e16014af3a6fe3adb092d51d2/FLAG4e4db32e1 [2023-11-19 07:43:30,426 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/data/ea84b4882/de73727e16014af3a6fe3adb092d51d2 [2023-11-19 07:43:30,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:30,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:30,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:30,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:30,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:30,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:30" (1/1) ... [2023-11-19 07:43:30,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217c6807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:30, skipping insertion in model container [2023-11-19 07:43:30,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:30" (1/1) ... [2023-11-19 07:43:30,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:31,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:31,185 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:31,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:31,338 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:31,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31 WrapperNode [2023-11-19 07:43:31,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:31,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:31,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:31,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:31,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,452 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-11-19 07:43:31,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:31,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:31,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:31,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:31,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:31,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:31,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:31,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:31,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (1/1) ... [2023-11-19 07:43:31,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:31,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:31,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:31,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:31,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:31,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:43:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:43:31,633 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:43:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:31,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:31,635 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 07:43:31,782 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:31,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:32,194 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:32,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:32,209 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:43:32,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32 BoogieIcfgContainer [2023-11-19 07:43:32,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:32,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:32,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:32,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:32,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:30" (1/3) ... [2023-11-19 07:43:32,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aec6867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:32, skipping insertion in model container [2023-11-19 07:43:32,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:31" (2/3) ... [2023-11-19 07:43:32,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aec6867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:32, skipping insertion in model container [2023-11-19 07:43:32,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32" (3/3) ... [2023-11-19 07:43:32,228 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-11-19 07:43:32,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:32,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:32,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:43:32,256 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:32,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:32,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 254 flow [2023-11-19 07:43:32,472 INFO L124 PetriNetUnfolderBase]: 6/124 cut-off events. [2023-11-19 07:43:32,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:32,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-19 07:43:32,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 254 flow [2023-11-19 07:43:32,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 124 transitions, 251 flow [2023-11-19 07:43:32,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:32,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 124 transitions, 251 flow [2023-11-19 07:43:32,506 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 124 transitions, 251 flow [2023-11-19 07:43:32,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 251 flow [2023-11-19 07:43:32,606 INFO L124 PetriNetUnfolderBase]: 6/124 cut-off events. [2023-11-19 07:43:32,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:32,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-19 07:43:32,628 INFO L119 LiptonReduction]: Number of co-enabled transitions 4864 [2023-11-19 07:43:34,581 INFO L134 LiptonReduction]: Checked pairs total: 14471 [2023-11-19 07:43:34,583 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-11-19 07:43:34,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:34,619 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;@4a51caa6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:34,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:43:34,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:34,644 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-19 07:43:34,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:34,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:34,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:34,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1317715676, now seen corresponding path program 1 times [2023-11-19 07:43:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100932918] [2023-11-19 07:43:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:34,996 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 07:43:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:34,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100932918] [2023-11-19 07:43:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100932918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:35,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877834854] [2023-11-19 07:43:35,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:35,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 197 [2023-11-19 07:43:35,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 07:43:35,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:35,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 197 [2023-11-19 07:43:35,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:35,271 INFO L124 PetriNetUnfolderBase]: 106/409 cut-off events. [2023-11-19 07:43:35,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:35,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2247 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-11-19 07:43:35,280 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-19 07:43:35,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-11-19 07:43:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-19 07:43:35,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6294416243654822 [2023-11-19 07:43:35,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-19 07:43:35,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-19 07:43:35,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:35,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-19 07:43:35,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 07:43:35,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 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 07:43:35,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 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 07:43:35,330 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 372 transitions. [2023-11-19 07:43:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-11-19 07:43:35,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:35,337 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-11-19 07:43:35,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-19 07:43:35,343 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-19 07:43:35,344 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-11-19 07:43:35,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 07:43:35,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:35,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:35,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1197002061, now seen corresponding path program 1 times [2023-11-19 07:43:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653349469] [2023-11-19 07:43:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653349469] [2023-11-19 07:43:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653349469] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794613014] [2023-11-19 07:43:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:35,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:35,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:35,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:35,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:35,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:43:35,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:43:35,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794613014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:35,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:35,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:43:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425309548] [2023-11-19 07:43:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:35,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:35,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 197 [2023-11-19 07:43:35,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 07:43:35,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:35,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 197 [2023-11-19 07:43:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:35,855 INFO L124 PetriNetUnfolderBase]: 154/569 cut-off events. [2023-11-19 07:43:35,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:35,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 569 events. 154/569 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3009 event pairs, 84 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 878. Up to 214 conditions per place. [2023-11-19 07:43:35,862 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 38 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-19 07:43:35,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 232 flow [2023-11-19 07:43:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-19 07:43:35,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6514382402707276 [2023-11-19 07:43:35,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-19 07:43:35,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-19 07:43:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-19 07:43:35,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 07:43:35,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 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 07:43:35,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 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 07:43:35,878 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 3 states and 385 transitions. [2023-11-19 07:43:35,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 232 flow [2023-11-19 07:43:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 228 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:35,887 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 132 flow [2023-11-19 07:43:35,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-19 07:43:35,889 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-19 07:43:35,890 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 132 flow [2023-11-19 07:43:35,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 07:43:35,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:35,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:35,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:36,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:36,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 110092722, now seen corresponding path program 1 times [2023-11-19 07:43:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115924895] [2023-11-19 07:43:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:36,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115924895] [2023-11-19 07:43:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115924895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158454886] [2023-11-19 07:43:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:36,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:36,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:36,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:36,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158454886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:36,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:36,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:43:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663906135] [2023-11-19 07:43:36,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:36,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-19 07:43:36,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 07:43:36,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:36,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-19 07:43:36,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:36,574 INFO L124 PetriNetUnfolderBase]: 154/578 cut-off events. [2023-11-19 07:43:36,574 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-19 07:43:36,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 578 events. 154/578 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3134 event pairs, 126 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 918. Up to 309 conditions per place. [2023-11-19 07:43:36,579 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 25 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-19 07:43:36,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 204 flow [2023-11-19 07:43:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 716 transitions. [2023-11-19 07:43:36,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057529610829103 [2023-11-19 07:43:36,583 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 716 transitions. [2023-11-19 07:43:36,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 716 transitions. [2023-11-19 07:43:36,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:36,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 716 transitions. [2023-11-19 07:43:36,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:36,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:36,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:36,591 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 132 flow. Second operand 6 states and 716 transitions. [2023-11-19 07:43:36,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 204 flow [2023-11-19 07:43:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:36,595 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 166 flow [2023-11-19 07:43:36,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-11-19 07:43:36,596 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-19 07:43:36,596 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 166 flow [2023-11-19 07:43:36,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states 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 07:43:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:36,598 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:36,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:36,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:36,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:36,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 973396028, now seen corresponding path program 2 times [2023-11-19 07:43:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:36,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466723513] [2023-11-19 07:43:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:37,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:37,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466723513] [2023-11-19 07:43:37,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466723513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:37,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964076372] [2023-11-19 07:43:37,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:43:37,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:37,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:37,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:37,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:43:37,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:43:37,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:37,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:43:37,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:37,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:43:37,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:43:37,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:43:37,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-19 07:43:37,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:43:37,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-19 07:43:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:43:37,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964076372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:37,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:37,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-19 07:43:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495501337] [2023-11-19 07:43:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:37,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:43:37,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2023-11-19 07:43:37,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 07:43:37,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:37,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2023-11-19 07:43:37,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:37,929 INFO L124 PetriNetUnfolderBase]: 624/1441 cut-off events. [2023-11-19 07:43:37,929 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-19 07:43:37,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1441 events. 624/1441 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7702 event pairs, 300 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 2735. Up to 991 conditions per place. [2023-11-19 07:43:37,941 INFO L140 encePairwiseOnDemand]: 186/197 looper letters, 79 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2023-11-19 07:43:37,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 476 flow [2023-11-19 07:43:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 691 transitions. [2023-11-19 07:43:37,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846023688663282 [2023-11-19 07:43:37,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 691 transitions. [2023-11-19 07:43:37,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 691 transitions. [2023-11-19 07:43:37,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:37,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 691 transitions. [2023-11-19 07:43:37,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 07:43:37,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:37,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:37,953 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 166 flow. Second operand 6 states and 691 transitions. [2023-11-19 07:43:37,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 476 flow [2023-11-19 07:43:37,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 114 transitions, 462 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:37,957 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 302 flow [2023-11-19 07:43:37,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2023-11-19 07:43:37,959 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-19 07:43:37,959 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 302 flow [2023-11-19 07:43:37,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 07:43:37,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:37,960 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:37,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:38,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:38,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:38,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash -833368996, now seen corresponding path program 1 times [2023-11-19 07:43:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87205162] [2023-11-19 07:43:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87205162] [2023-11-19 07:43:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87205162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071018191] [2023-11-19 07:43:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:38,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:38,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:43:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:43:38,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:38,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071018191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:38,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:38,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:43:38,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600351121] [2023-11-19 07:43:38,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:43:38,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:43:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:43:38,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-19 07:43:38,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 302 flow. Second operand has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 07:43:38,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:38,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-19 07:43:38,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:38,783 INFO L124 PetriNetUnfolderBase]: 273/948 cut-off events. [2023-11-19 07:43:38,784 INFO L125 PetriNetUnfolderBase]: For 136/143 co-relation queries the response was YES. [2023-11-19 07:43:38,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 948 events. 273/948 cut-off events. For 136/143 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5547 event pairs, 148 based on Foata normal form. 6/914 useless extension candidates. Maximal degree in co-relation 1888. Up to 447 conditions per place. [2023-11-19 07:43:38,792 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 26 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-11-19 07:43:38,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 412 flow [2023-11-19 07:43:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:43:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:43:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1409 transitions. [2023-11-19 07:43:38,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960236886632826 [2023-11-19 07:43:38,798 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1409 transitions. [2023-11-19 07:43:38,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1409 transitions. [2023-11-19 07:43:38,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:38,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1409 transitions. [2023-11-19 07:43:38,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.41666666666667) internal successors, (1409), 12 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 07:43:38,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states 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 07:43:38,810 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 197.0) internal successors, (2561), 13 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states 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 07:43:38,810 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 302 flow. Second operand 12 states and 1409 transitions. [2023-11-19 07:43:38,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 412 flow [2023-11-19 07:43:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:38,817 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 386 flow [2023-11-19 07:43:38,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=386, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-19 07:43:38,819 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2023-11-19 07:43:38,819 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 386 flow [2023-11-19 07:43:38,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.38461538461539) internal successors, (1500), 13 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 07:43:38,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:38,820 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:38,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:39,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:39,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:39,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1945254044, now seen corresponding path program 2 times [2023-11-19 07:43:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:39,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240631730] [2023-11-19 07:43:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:39,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240631730] [2023-11-19 07:43:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240631730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:39,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:39,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:39,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830030176] [2023-11-19 07:43:39,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:39,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:39,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2023-11-19 07:43:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 07:43:39,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:39,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2023-11-19 07:43:39,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:40,305 INFO L124 PetriNetUnfolderBase]: 771/1874 cut-off events. [2023-11-19 07:43:40,306 INFO L125 PetriNetUnfolderBase]: For 388/394 co-relation queries the response was YES. [2023-11-19 07:43:40,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 1874 events. 771/1874 cut-off events. For 388/394 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11201 event pairs, 284 based on Foata normal form. 0/1802 useless extension candidates. Maximal degree in co-relation 4178. Up to 1180 conditions per place. [2023-11-19 07:43:40,326 INFO L140 encePairwiseOnDemand]: 182/197 looper letters, 121 selfloop transitions, 46 changer transitions 0/185 dead transitions. [2023-11-19 07:43:40,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 990 flow [2023-11-19 07:43:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 722 transitions. [2023-11-19 07:43:40,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61082910321489 [2023-11-19 07:43:40,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 722 transitions. [2023-11-19 07:43:40,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 722 transitions. [2023-11-19 07:43:40,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:40,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 722 transitions. [2023-11-19 07:43:40,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 07:43:40,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:40,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:40,338 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 386 flow. Second operand 6 states and 722 transitions. [2023-11-19 07:43:40,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 990 flow [2023-11-19 07:43:40,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 185 transitions, 942 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:43:40,347 INFO L231 Difference]: Finished difference. Result has 98 places, 132 transitions, 692 flow [2023-11-19 07:43:40,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=98, PETRI_TRANSITIONS=132} [2023-11-19 07:43:40,348 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2023-11-19 07:43:40,348 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 132 transitions, 692 flow [2023-11-19 07:43:40,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 07:43:40,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:40,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:40,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:43:40,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:40,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -987235948, now seen corresponding path program 1 times [2023-11-19 07:43:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774932820] [2023-11-19 07:43:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:40,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:40,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774932820] [2023-11-19 07:43:40,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774932820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:40,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:40,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:40,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118707170] [2023-11-19 07:43:40,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:40,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 197 [2023-11-19 07:43:40,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 132 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:40,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:40,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 197 [2023-11-19 07:43:40,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:41,767 INFO L124 PetriNetUnfolderBase]: 1282/2706 cut-off events. [2023-11-19 07:43:41,768 INFO L125 PetriNetUnfolderBase]: For 1716/1743 co-relation queries the response was YES. [2023-11-19 07:43:41,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 2706 events. 1282/2706 cut-off events. For 1716/1743 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15616 event pairs, 424 based on Foata normal form. 0/2601 useless extension candidates. Maximal degree in co-relation 7726. Up to 2144 conditions per place. [2023-11-19 07:43:41,796 INFO L140 encePairwiseOnDemand]: 174/197 looper letters, 159 selfloop transitions, 89 changer transitions 8/263 dead transitions. [2023-11-19 07:43:41,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 263 transitions, 1664 flow [2023-11-19 07:43:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 701 transitions. [2023-11-19 07:43:41,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930626057529611 [2023-11-19 07:43:41,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 701 transitions. [2023-11-19 07:43:41,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 701 transitions. [2023-11-19 07:43:41,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:41,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 701 transitions. [2023-11-19 07:43:41,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.83333333333333) internal successors, (701), 6 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 07:43:41,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:41,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:41,811 INFO L175 Difference]: Start difference. First operand has 98 places, 132 transitions, 692 flow. Second operand 6 states and 701 transitions. [2023-11-19 07:43:41,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 263 transitions, 1664 flow [2023-11-19 07:43:41,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 263 transitions, 1664 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:41,829 INFO L231 Difference]: Finished difference. Result has 108 places, 211 transitions, 1430 flow [2023-11-19 07:43:41,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1430, PETRI_PLACES=108, PETRI_TRANSITIONS=211} [2023-11-19 07:43:41,831 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2023-11-19 07:43:41,831 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 211 transitions, 1430 flow [2023-11-19 07:43:41,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:41,832 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:43:41,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:41,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1996971318, now seen corresponding path program 1 times [2023-11-19 07:43:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774722364] [2023-11-19 07:43:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774722364] [2023-11-19 07:43:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774722364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075766841] [2023-11-19 07:43:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:42,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:42,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 197 [2023-11-19 07:43:42,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 211 transitions, 1430 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:42,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:42,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 197 [2023-11-19 07:43:42,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:43,267 INFO L124 PetriNetUnfolderBase]: 1513/3133 cut-off events. [2023-11-19 07:43:43,268 INFO L125 PetriNetUnfolderBase]: For 4082/4159 co-relation queries the response was YES. [2023-11-19 07:43:43,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 3133 events. 1513/3133 cut-off events. For 4082/4159 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 18145 event pairs, 463 based on Foata normal form. 0/3013 useless extension candidates. Maximal degree in co-relation 10996. Up to 2639 conditions per place. [2023-11-19 07:43:43,305 INFO L140 encePairwiseOnDemand]: 182/197 looper letters, 226 selfloop transitions, 72 changer transitions 0/303 dead transitions. [2023-11-19 07:43:43,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 303 transitions, 2506 flow [2023-11-19 07:43:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2023-11-19 07:43:43,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532994923857868 [2023-11-19 07:43:43,309 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 654 transitions. [2023-11-19 07:43:43,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 654 transitions. [2023-11-19 07:43:43,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:43,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 654 transitions. [2023-11-19 07:43:43,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:43,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:43,316 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:43,316 INFO L175 Difference]: Start difference. First operand has 108 places, 211 transitions, 1430 flow. Second operand 6 states and 654 transitions. [2023-11-19 07:43:43,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 303 transitions, 2506 flow [2023-11-19 07:43:43,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 303 transitions, 2410 flow, removed 48 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:43,351 INFO L231 Difference]: Finished difference. Result has 118 places, 265 transitions, 2022 flow [2023-11-19 07:43:43,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2022, PETRI_PLACES=118, PETRI_TRANSITIONS=265} [2023-11-19 07:43:43,355 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2023-11-19 07:43:43,355 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 265 transitions, 2022 flow [2023-11-19 07:43:43,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 07:43:43,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:43,356 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:43:43,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:43,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 962062667, now seen corresponding path program 1 times [2023-11-19 07:43:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058007333] [2023-11-19 07:43:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:43:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058007333] [2023-11-19 07:43:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058007333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809449442] [2023-11-19 07:43:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:44,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:44,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:44,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:44,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:43:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:44,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:43:44,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:44,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:43:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:44,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809449442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:44,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:43:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032709628] [2023-11-19 07:43:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:44,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:43:44,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-19 07:43:44,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 265 transitions, 2022 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:44,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:44,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-19 07:43:44,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:45,860 INFO L124 PetriNetUnfolderBase]: 2062/5057 cut-off events. [2023-11-19 07:43:45,860 INFO L125 PetriNetUnfolderBase]: For 10360/10554 co-relation queries the response was YES. [2023-11-19 07:43:45,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18744 conditions, 5057 events. 2062/5057 cut-off events. For 10360/10554 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 36871 event pairs, 245 based on Foata normal form. 17/4975 useless extension candidates. Maximal degree in co-relation 18673. Up to 1269 conditions per place. [2023-11-19 07:43:45,937 INFO L140 encePairwiseOnDemand]: 189/197 looper letters, 121 selfloop transitions, 12 changer transitions 0/339 dead transitions. [2023-11-19 07:43:45,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 339 transitions, 2842 flow [2023-11-19 07:43:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-11-19 07:43:45,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989847715736041 [2023-11-19 07:43:45,940 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-11-19 07:43:45,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-11-19 07:43:45,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:45,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-11-19 07:43:45,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 07:43:45,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:45,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:45,947 INFO L175 Difference]: Start difference. First operand has 118 places, 265 transitions, 2022 flow. Second operand 6 states and 708 transitions. [2023-11-19 07:43:45,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 339 transitions, 2842 flow [2023-11-19 07:43:46,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 339 transitions, 2760 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:46,030 INFO L231 Difference]: Finished difference. Result has 126 places, 275 transitions, 2052 flow [2023-11-19 07:43:46,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2052, PETRI_PLACES=126, PETRI_TRANSITIONS=275} [2023-11-19 07:43:46,032 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2023-11-19 07:43:46,032 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 275 transitions, 2052 flow [2023-11-19 07:43:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:46,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:46,033 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:46,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:46,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:43:46,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash 453912837, now seen corresponding path program 2 times [2023-11-19 07:43:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:46,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753882515] [2023-11-19 07:43:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:43:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753882515] [2023-11-19 07:43:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753882515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582065159] [2023-11-19 07:43:46,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:43:46,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:46,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:47,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:43:47,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:43:47,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:47,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:43:47,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:47,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:43:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:47,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582065159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:47,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:43:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388348288] [2023-11-19 07:43:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:47,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:43:47,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-19 07:43:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 275 transitions, 2052 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-19 07:43:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:48,897 INFO L124 PetriNetUnfolderBase]: 2354/5752 cut-off events. [2023-11-19 07:43:48,897 INFO L125 PetriNetUnfolderBase]: For 12287/12487 co-relation queries the response was YES. [2023-11-19 07:43:48,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22251 conditions, 5752 events. 2354/5752 cut-off events. For 12287/12487 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 43383 event pairs, 285 based on Foata normal form. 19/5709 useless extension candidates. Maximal degree in co-relation 22175. Up to 1474 conditions per place. [2023-11-19 07:43:49,011 INFO L140 encePairwiseOnDemand]: 190/197 looper letters, 124 selfloop transitions, 19 changer transitions 0/349 dead transitions. [2023-11-19 07:43:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 349 transitions, 2990 flow [2023-11-19 07:43:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2023-11-19 07:43:49,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922165820642978 [2023-11-19 07:43:49,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2023-11-19 07:43:49,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2023-11-19 07:43:49,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:49,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2023-11-19 07:43:49,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:49,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:49,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:49,030 INFO L175 Difference]: Start difference. First operand has 126 places, 275 transitions, 2052 flow. Second operand 6 states and 700 transitions. [2023-11-19 07:43:49,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 349 transitions, 2990 flow [2023-11-19 07:43:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 349 transitions, 2989 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:49,134 INFO L231 Difference]: Finished difference. Result has 133 places, 285 transitions, 2210 flow [2023-11-19 07:43:49,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2210, PETRI_PLACES=133, PETRI_TRANSITIONS=285} [2023-11-19 07:43:49,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2023-11-19 07:43:49,136 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 285 transitions, 2210 flow [2023-11-19 07:43:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:49,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:49,137 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:49,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:43:49,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:49,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -412394987, now seen corresponding path program 3 times [2023-11-19 07:43:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194674646] [2023-11-19 07:43:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:43:50,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194674646] [2023-11-19 07:43:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194674646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305415056] [2023-11-19 07:43:50,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:43:50,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:50,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:50,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:43:50,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 07:43:50,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:50,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:43:50,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:50,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:43:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:50,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:50,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305415056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:50,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:50,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:43:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413909859] [2023-11-19 07:43:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:50,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:43:50,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-19 07:43:50,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 285 transitions, 2210 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:50,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:50,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-19 07:43:50,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:51,951 INFO L124 PetriNetUnfolderBase]: 2484/6089 cut-off events. [2023-11-19 07:43:51,951 INFO L125 PetriNetUnfolderBase]: For 14727/14976 co-relation queries the response was YES. [2023-11-19 07:43:51,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24181 conditions, 6089 events. 2484/6089 cut-off events. For 14727/14976 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 48107 event pairs, 273 based on Foata normal form. 8/6020 useless extension candidates. Maximal degree in co-relation 24101. Up to 1498 conditions per place. [2023-11-19 07:43:52,024 INFO L140 encePairwiseOnDemand]: 190/197 looper letters, 137 selfloop transitions, 18 changer transitions 0/361 dead transitions. [2023-11-19 07:43:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 361 transitions, 3111 flow [2023-11-19 07:43:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-11-19 07:43:52,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006768189509306 [2023-11-19 07:43:52,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-11-19 07:43:52,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-11-19 07:43:52,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:52,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-11-19 07:43:52,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 07:43:52,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:52,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:52,036 INFO L175 Difference]: Start difference. First operand has 133 places, 285 transitions, 2210 flow. Second operand 6 states and 710 transitions. [2023-11-19 07:43:52,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 361 transitions, 3111 flow [2023-11-19 07:43:52,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 361 transitions, 3083 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:43:52,123 INFO L231 Difference]: Finished difference. Result has 138 places, 290 transitions, 2298 flow [2023-11-19 07:43:52,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2298, PETRI_PLACES=138, PETRI_TRANSITIONS=290} [2023-11-19 07:43:52,124 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2023-11-19 07:43:52,124 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 290 transitions, 2298 flow [2023-11-19 07:43:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:52,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:52,125 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:52,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:43:52,340 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:52,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1915141546, now seen corresponding path program 1 times [2023-11-19 07:43:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828832477] [2023-11-19 07:43:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 07:43:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828832477] [2023-11-19 07:43:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828832477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992576720] [2023-11-19 07:43:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:52,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:52,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:52,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:43:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:52,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:43:52,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:52,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:43:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:53,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992576720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 07:43:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472671065] [2023-11-19 07:43:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:53,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:53,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:43:53,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 197 [2023-11-19 07:43:53,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 290 transitions, 2298 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:53,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:53,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 197 [2023-11-19 07:43:53,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:54,885 INFO L124 PetriNetUnfolderBase]: 2229/5500 cut-off events. [2023-11-19 07:43:54,886 INFO L125 PetriNetUnfolderBase]: For 13928/14135 co-relation queries the response was YES. [2023-11-19 07:43:54,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21820 conditions, 5500 events. 2229/5500 cut-off events. For 13928/14135 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 43146 event pairs, 327 based on Foata normal form. 23/5440 useless extension candidates. Maximal degree in co-relation 21737. Up to 1670 conditions per place. [2023-11-19 07:43:54,989 INFO L140 encePairwiseOnDemand]: 190/197 looper letters, 113 selfloop transitions, 16 changer transitions 0/335 dead transitions. [2023-11-19 07:43:54,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 335 transitions, 2921 flow [2023-11-19 07:43:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2023-11-19 07:43:54,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922165820642978 [2023-11-19 07:43:54,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2023-11-19 07:43:54,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2023-11-19 07:43:54,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:54,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2023-11-19 07:43:54,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:55,002 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:55,002 INFO L175 Difference]: Start difference. First operand has 138 places, 290 transitions, 2298 flow. Second operand 6 states and 700 transitions. [2023-11-19 07:43:55,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 335 transitions, 2921 flow [2023-11-19 07:43:55,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 335 transitions, 2891 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:55,089 INFO L231 Difference]: Finished difference. Result has 144 places, 291 transitions, 2335 flow [2023-11-19 07:43:55,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2335, PETRI_PLACES=144, PETRI_TRANSITIONS=291} [2023-11-19 07:43:55,091 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2023-11-19 07:43:55,092 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 291 transitions, 2335 flow [2023-11-19 07:43:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 07:43:55,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:55,093 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 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 07:43:55,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:55,314 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:55,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1171202132, now seen corresponding path program 1 times [2023-11-19 07:43:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964961909] [2023-11-19 07:43:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:55,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964961909] [2023-11-19 07:43:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964961909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401836914] [2023-11-19 07:43:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:55,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:55,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:43:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:55,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:55,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401836914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:55,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:55,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:43:55,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409874582] [2023-11-19 07:43:55,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:55,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:55,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 197 [2023-11-19 07:43:55,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 291 transitions, 2335 flow. Second operand has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 07:43:55,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:55,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 197 [2023-11-19 07:43:55,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:57,796 INFO L124 PetriNetUnfolderBase]: 3949/9646 cut-off events. [2023-11-19 07:43:57,796 INFO L125 PetriNetUnfolderBase]: For 25798/26174 co-relation queries the response was YES. [2023-11-19 07:43:57,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39372 conditions, 9646 events. 3949/9646 cut-off events. For 25798/26174 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73607 event pairs, 392 based on Foata normal form. 126/9675 useless extension candidates. Maximal degree in co-relation 39286. Up to 2387 conditions per place. [2023-11-19 07:43:57,911 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 195 selfloop transitions, 23 changer transitions 0/424 dead transitions. [2023-11-19 07:43:57,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 424 transitions, 4046 flow [2023-11-19 07:43:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 763 transitions. [2023-11-19 07:43:57,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455160744500846 [2023-11-19 07:43:57,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 763 transitions. [2023-11-19 07:43:57,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 763 transitions. [2023-11-19 07:43:57,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:57,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 763 transitions. [2023-11-19 07:43:57,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 07:43:57,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:57,921 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 07:43:57,921 INFO L175 Difference]: Start difference. First operand has 144 places, 291 transitions, 2335 flow. Second operand 6 states and 763 transitions. [2023-11-19 07:43:57,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 424 transitions, 4046 flow [2023-11-19 07:43:58,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 424 transitions, 4016 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:58,074 INFO L231 Difference]: Finished difference. Result has 151 places, 300 transitions, 2489 flow [2023-11-19 07:43:58,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2489, PETRI_PLACES=151, PETRI_TRANSITIONS=300} [2023-11-19 07:43:58,075 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2023-11-19 07:43:58,075 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 300 transitions, 2489 flow [2023-11-19 07:43:58,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 07:43:58,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:58,076 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:58,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:58,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:58,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:43:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash -188559856, now seen corresponding path program 1 times [2023-11-19 07:43:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516596241] [2023-11-19 07:43:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:59,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:59,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516596241] [2023-11-19 07:43:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516596241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970759779] [2023-11-19 07:43:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:59,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:59,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:59,983 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1a5cf0-320d-4a1a-8023-f7aa6f2cf88e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:44:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:00,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 07:44:00,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:00,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:44:00,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:44:00,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-19 07:44:00,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-19 07:44:00,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-19 07:44:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-19 07:44:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-19 07:44:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2023-11-19 07:44:01,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:01,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2023-11-19 07:44:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:44:13,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:44:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970759779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:17,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 38 [2023-11-19 07:44:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133574406] [2023-11-19 07:44:17,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-19 07:44:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-19 07:44:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1218, Unknown=6, NotChecked=0, Total=1482