./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/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_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/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_a3be96be-4125-47af-8823-4ce2a8715840/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 cf3bc75facf298f845d28de033983b6b167a38358df8a7e4c589353ba4656864 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:49,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:49,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:32:49,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:49,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:49,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:49,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:49,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:49,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:49,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:49,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:49,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:49,814 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:49,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:49,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:49,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:49,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:49,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:49,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:49,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:49,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:49,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:49,821 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:32:49,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:32:49,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:49,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:49,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:49,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:49,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:49,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:49,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:49,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:49,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:49,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:49,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:49,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:49,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:49,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:49,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:49,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:49,829 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:49,830 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_a3be96be-4125-47af-8823-4ce2a8715840/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf3bc75facf298f845d28de033983b6b167a38358df8a7e4c589353ba4656864 [2023-11-19 07:32:50,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:50,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:50,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:50,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:50,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:50,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/25_stack.i [2023-11-19 07:32:53,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:53,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:53,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/sv-benchmarks/c/pthread-ext/25_stack.i [2023-11-19 07:32:53,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/data/1963bc659/f5e18e63918a43628bc2e9e8de9111e9/FLAGf92c041d6 [2023-11-19 07:32:53,764 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/data/1963bc659/f5e18e63918a43628bc2e9e8de9111e9 [2023-11-19 07:32:53,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:53,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:53,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:53,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:53,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:53,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642643b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:54,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:54,365 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:54,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:54,469 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:54,470 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:54,478 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:54,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54 WrapperNode [2023-11-19 07:32:54,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:54,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:54,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:54,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:54,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,562 INFO L138 Inliner]: procedures = 179, calls = 37, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 297 [2023-11-19 07:32:54,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:54,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:54,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:54,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:54,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:54,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:54,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:54,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:54,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2023-11-19 07:32:54,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:54,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:54,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:54,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3be96be-4125-47af-8823-4ce2a8715840/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:32:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:32:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:32:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:32:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:32:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:32:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:32:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:32:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:54,764 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 07:32:54,997 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:55,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:55,731 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:56,100 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:56,100 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:32:56,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:56 BoogieIcfgContainer [2023-11-19 07:32:56,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:56,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:56,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:56,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:56,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:53" (1/3) ... [2023-11-19 07:32:56,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e87c37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:56, skipping insertion in model container [2023-11-19 07:32:56,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (2/3) ... [2023-11-19 07:32:56,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e87c37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:56, skipping insertion in model container [2023-11-19 07:32:56,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:56" (3/3) ... [2023-11-19 07:32:56,115 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack.i [2023-11-19 07:32:56,125 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:32:56,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:56,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-19 07:32:56,137 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:32:56,227 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:32:56,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,334 INFO L124 PetriNetUnfolderBase]: 9/168 cut-off events. [2023-11-19 07:32:56,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:32:56,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 168 events. 9/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 136. Up to 4 conditions per place. [2023-11-19 07:32:56,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:32:56,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 157 transitions, 318 flow [2023-11-19 07:32:56,417 INFO L124 PetriNetUnfolderBase]: 9/168 cut-off events. [2023-11-19 07:32:56,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:32:56,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 168 events. 9/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 136. Up to 4 conditions per place. [2023-11-19 07:32:56,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 3444 [2023-11-19 07:33:03,593 INFO L134 LiptonReduction]: Checked pairs total: 4309 [2023-11-19 07:33:03,594 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-11-19 07:33:03,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:03,615 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;@2d803b86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:03,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-19 07:33:03,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:03,618 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-19 07:33:03,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:03,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:03,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:33:03,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 07:33:03,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 37054277, now seen corresponding path program 1 times [2023-11-19 07:33:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072726748] [2023-11-19 07:33:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:03,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:03,805 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 07:33:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072726748] [2023-11-19 07:33:03,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072726748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:03,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:03,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063207741] [2023-11-19 07:33:03,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:03,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:03,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 347 [2023-11-19 07:33:03,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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 07:33:03,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:03,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 347 [2023-11-19 07:33:03,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:03,937 INFO L124 PetriNetUnfolderBase]: 25/55 cut-off events. [2023-11-19 07:33:03,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:03,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 25/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 16 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 102. Up to 55 conditions per place. [2023-11-19 07:33:03,940 INFO L140 encePairwiseOnDemand]: 319/347 looper letters, 15 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-11-19 07:33:03,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 16 transitions, 66 flow [2023-11-19 07:33:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:33:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 295 transitions. [2023-11-19 07:33:03,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250720461095101 [2023-11-19 07:33:03,965 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 295 transitions. [2023-11-19 07:33:03,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 295 transitions. [2023-11-19 07:33:03,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:03,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 295 transitions. [2023-11-19 07:33:03,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 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 07:33:03,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 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 07:33:03,984 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 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 07:33:03,986 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 92 flow. Second operand 2 states and 295 transitions. [2023-11-19 07:33:03,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 16 transitions, 66 flow [2023-11-19 07:33:03,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:03,991 INFO L231 Difference]: Finished difference. Result has 17 places, 16 transitions, 36 flow [2023-11-19 07:33:03,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=16} [2023-11-19 07:33:03,997 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -26 predicate places. [2023-11-19 07:33:03,997 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 16 transitions, 36 flow [2023-11-19 07:33:03,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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 07:33:03,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:03,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:33:03,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:03,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 07:33:04,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1249506179, now seen corresponding path program 1 times [2023-11-19 07:33:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199410443] [2023-11-19 07:33:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:04,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:04,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:04,118 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:33:04,120 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2023-11-19 07:33:04,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2023-11-19 07:33:04,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2023-11-19 07:33:04,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2023-11-19 07:33:04,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2023-11-19 07:33:04,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2023-11-19 07:33:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2023-11-19 07:33:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2023-11-19 07:33:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2023-11-19 07:33:04,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2023-11-19 07:33:04,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2023-11-19 07:33:04,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2023-11-19 07:33:04,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2023-11-19 07:33:04,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2023-11-19 07:33:04,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2023-11-19 07:33:04,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2023-11-19 07:33:04,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2023-11-19 07:33:04,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2023-11-19 07:33:04,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2023-11-19 07:33:04,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2023-11-19 07:33:04,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2023-11-19 07:33:04,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2023-11-19 07:33:04,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2023-11-19 07:33:04,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2023-11-19 07:33:04,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2023-11-19 07:33:04,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2023-11-19 07:33:04,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2023-11-19 07:33:04,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2023-11-19 07:33:04,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2023-11-19 07:33:04,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2023-11-19 07:33:04,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2023-11-19 07:33:04,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2023-11-19 07:33:04,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2023-11-19 07:33:04,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2023-11-19 07:33:04,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2023-11-19 07:33:04,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2023-11-19 07:33:04,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2023-11-19 07:33:04,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2023-11-19 07:33:04,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2023-11-19 07:33:04,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2023-11-19 07:33:04,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2023-11-19 07:33:04,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2023-11-19 07:33:04,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2023-11-19 07:33:04,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2023-11-19 07:33:04,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2023-11-19 07:33:04,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2023-11-19 07:33:04,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2023-11-19 07:33:04,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2023-11-19 07:33:04,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2023-11-19 07:33:04,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2023-11-19 07:33:04,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2023-11-19 07:33:04,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2023-11-19 07:33:04,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2023-11-19 07:33:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:04,139 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:33:04,142 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:33:04,142 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:33:04,232 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:33:04,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,312 INFO L124 PetriNetUnfolderBase]: 17/305 cut-off events. [2023-11-19 07:33:04,312 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:33:04,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 17/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 897 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 259. Up to 6 conditions per place. [2023-11-19 07:33:04,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:04,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 572 flow [2023-11-19 07:33:04,427 INFO L124 PetriNetUnfolderBase]: 17/305 cut-off events. [2023-11-19 07:33:04,427 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:33:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 17/305 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 897 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 259. Up to 6 conditions per place. [2023-11-19 07:33:04,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 37392 [2023-11-19 07:33:11,355 INFO L134 LiptonReduction]: Checked pairs total: 136105 [2023-11-19 07:33:11,355 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-19 07:33:11,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:11,363 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;@2d803b86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:11,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-19 07:33:11,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:11,365 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:33:11,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:11,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:11,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:33:11,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-19 07:33:11,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 55455363, now seen corresponding path program 1 times [2023-11-19 07:33:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554664360] [2023-11-19 07:33:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,433 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 07:33:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554664360] [2023-11-19 07:33:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554664360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:11,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:11,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574010865] [2023-11-19 07:33:11,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:11,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 467 [2023-11-19 07:33:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 310 flow. Second operand has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 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 07:33:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 467 [2023-11-19 07:33:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:12,141 INFO L124 PetriNetUnfolderBase]: 1482/3596 cut-off events. [2023-11-19 07:33:12,141 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-19 07:33:12,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5979 conditions, 3596 events. 1482/3596 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29000 event pairs, 1154 based on Foata normal form. 0/2983 useless extension candidates. Maximal degree in co-relation 3608. Up to 2321 conditions per place. [2023-11-19 07:33:12,175 INFO L140 encePairwiseOnDemand]: 432/467 looper letters, 50 selfloop transitions, 0 changer transitions 0/115 dead transitions. [2023-11-19 07:33:12,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 340 flow [2023-11-19 07:33:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:33:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 527 transitions. [2023-11-19 07:33:12,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642398286937902 [2023-11-19 07:33:12,179 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 527 transitions. [2023-11-19 07:33:12,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 527 transitions. [2023-11-19 07:33:12,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:12,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 527 transitions. [2023-11-19 07:33:12,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.5) internal successors, (527), 2 states have internal predecessors, (527), 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 07:33:12,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 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 07:33:12,190 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 467.0) internal successors, (1401), 3 states have internal predecessors, (1401), 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 07:33:12,191 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 310 flow. Second operand 2 states and 527 transitions. [2023-11-19 07:33:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 340 flow [2023-11-19 07:33:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:12,198 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 240 flow [2023-11-19 07:33:12,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2023-11-19 07:33:12,199 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -32 predicate places. [2023-11-19 07:33:12,200 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 240 flow [2023-11-19 07:33:12,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 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 07:33:12,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:12,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:33:12,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:12,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-19 07:33:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1753044165, now seen corresponding path program 1 times [2023-11-19 07:33:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044681352] [2023-11-19 07:33:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,306 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 07:33:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044681352] [2023-11-19 07:33:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044681352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:12,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:12,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411337994] [2023-11-19 07:33:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:12,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 467 [2023-11-19 07:33:12,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 07:33:12,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:12,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 467 [2023-11-19 07:33:12,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:13,682 INFO L124 PetriNetUnfolderBase]: 3468/8340 cut-off events. [2023-11-19 07:33:13,683 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-19 07:33:13,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13900 conditions, 8340 events. 3468/8340 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 77422 event pairs, 1317 based on Foata normal form. 0/7014 useless extension candidates. Maximal degree in co-relation 13895. Up to 2853 conditions per place. [2023-11-19 07:33:13,755 INFO L140 encePairwiseOnDemand]: 459/467 looper letters, 104 selfloop transitions, 6 changer transitions 0/168 dead transitions. [2023-11-19 07:33:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 168 transitions, 571 flow [2023-11-19 07:33:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 751 transitions. [2023-11-19 07:33:13,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53604568165596 [2023-11-19 07:33:13,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 751 transitions. [2023-11-19 07:33:13,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 751 transitions. [2023-11-19 07:33:13,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:13,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 751 transitions. [2023-11-19 07:33:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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 07:33:13,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 07:33:13,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 07:33:13,777 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 240 flow. Second operand 3 states and 751 transitions. [2023-11-19 07:33:13,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 168 transitions, 571 flow [2023-11-19 07:33:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:13,784 INFO L231 Difference]: Finished difference. Result has 117 places, 121 transitions, 292 flow [2023-11-19 07:33:13,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=117, PETRI_TRANSITIONS=121} [2023-11-19 07:33:13,788 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -28 predicate places. [2023-11-19 07:33:13,789 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 121 transitions, 292 flow [2023-11-19 07:33:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 07:33:13,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:13,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:13,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:13,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-19 07:33:13,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1883660484, now seen corresponding path program 1 times [2023-11-19 07:33:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217150393] [2023-11-19 07:33:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217150393] [2023-11-19 07:33:13,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217150393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:13,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:13,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:13,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995230424] [2023-11-19 07:33:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:13,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:13,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:13,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:13,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 467 [2023-11-19 07:33:13,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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 07:33:13,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:13,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 467 [2023-11-19 07:33:13,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:15,156 INFO L124 PetriNetUnfolderBase]: 3702/8604 cut-off events. [2023-11-19 07:33:15,156 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2023-11-19 07:33:15,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14843 conditions, 8604 events. 3702/8604 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 78904 event pairs, 2630 based on Foata normal form. 0/7199 useless extension candidates. Maximal degree in co-relation 14836. Up to 5659 conditions per place. [2023-11-19 07:33:15,240 INFO L140 encePairwiseOnDemand]: 460/467 looper letters, 77 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2023-11-19 07:33:15,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 149 transitions, 519 flow [2023-11-19 07:33:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-11-19 07:33:15,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110635260528195 [2023-11-19 07:33:15,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-11-19 07:33:15,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-11-19 07:33:15,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:15,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-11-19 07:33:15,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 07:33:15,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 07:33:15,256 INFO L175 Difference]: Start difference. First operand has 117 places, 121 transitions, 292 flow. Second operand 3 states and 716 transitions. [2023-11-19 07:33:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 149 transitions, 519 flow [2023-11-19 07:33:15,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 149 transitions, 507 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:15,263 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 320 flow [2023-11-19 07:33:15,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=118, PETRI_TRANSITIONS=126} [2023-11-19 07:33:15,264 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -27 predicate places. [2023-11-19 07:33:15,264 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 320 flow [2023-11-19 07:33:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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 07:33:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:33:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:15,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2023-11-19 07:33:15,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -703694919, now seen corresponding path program 1 times [2023-11-19 07:33:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:15,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005102708] [2023-11-19 07:33:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:15,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:15,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:15,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:33:15,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2023-11-19 07:33:15,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2023-11-19 07:33:15,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2023-11-19 07:33:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2023-11-19 07:33:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2023-11-19 07:33:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2023-11-19 07:33:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2023-11-19 07:33:15,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2023-11-19 07:33:15,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2023-11-19 07:33:15,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2023-11-19 07:33:15,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2023-11-19 07:33:15,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2023-11-19 07:33:15,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2023-11-19 07:33:15,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2023-11-19 07:33:15,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2023-11-19 07:33:15,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2023-11-19 07:33:15,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2023-11-19 07:33:15,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2023-11-19 07:33:15,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2023-11-19 07:33:15,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2023-11-19 07:33:15,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2023-11-19 07:33:15,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2023-11-19 07:33:15,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2023-11-19 07:33:15,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2023-11-19 07:33:15,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2023-11-19 07:33:15,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2023-11-19 07:33:15,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2023-11-19 07:33:15,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2023-11-19 07:33:15,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2023-11-19 07:33:15,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2023-11-19 07:33:15,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2023-11-19 07:33:15,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2023-11-19 07:33:15,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2023-11-19 07:33:15,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2023-11-19 07:33:15,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2023-11-19 07:33:15,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2023-11-19 07:33:15,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2023-11-19 07:33:15,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2023-11-19 07:33:15,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2023-11-19 07:33:15,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2023-11-19 07:33:15,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2023-11-19 07:33:15,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2023-11-19 07:33:15,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2023-11-19 07:33:15,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2023-11-19 07:33:15,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2023-11-19 07:33:15,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2023-11-19 07:33:15,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2023-11-19 07:33:15,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2023-11-19 07:33:15,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2023-11-19 07:33:15,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2023-11-19 07:33:15,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2023-11-19 07:33:15,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2023-11-19 07:33:15,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2023-11-19 07:33:15,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2023-11-19 07:33:15,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2023-11-19 07:33:15,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2023-11-19 07:33:15,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2023-11-19 07:33:15,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2023-11-19 07:33:15,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2023-11-19 07:33:15,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2023-11-19 07:33:15,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2023-11-19 07:33:15,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2023-11-19 07:33:15,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2023-11-19 07:33:15,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2023-11-19 07:33:15,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2023-11-19 07:33:15,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2023-11-19 07:33:15,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2023-11-19 07:33:15,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2023-11-19 07:33:15,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2023-11-19 07:33:15,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2023-11-19 07:33:15,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2023-11-19 07:33:15,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2023-11-19 07:33:15,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2023-11-19 07:33:15,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2023-11-19 07:33:15,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:15,341 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:33:15,342 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:33:15,342 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:33:15,441 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:33:15,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,637 INFO L124 PetriNetUnfolderBase]: 25/442 cut-off events. [2023-11-19 07:33:15,637 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:33:15,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 442 events. 25/442 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1658 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 382. Up to 8 conditions per place. [2023-11-19 07:33:15,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:15,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 405 transitions, 828 flow [2023-11-19 07:33:15,766 INFO L124 PetriNetUnfolderBase]: 25/442 cut-off events. [2023-11-19 07:33:15,766 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:33:15,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 442 events. 25/442 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1658 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 382. Up to 8 conditions per place. [2023-11-19 07:33:15,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 101844 [2023-11-19 07:33:24,895 INFO L134 LiptonReduction]: Checked pairs total: 380062 [2023-11-19 07:33:24,895 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-11-19 07:33:24,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:24,902 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;@2d803b86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:24,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2023-11-19 07:33:24,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:24,905 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:33:24,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:24,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:24,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:33:24,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2023-11-19 07:33:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash 79879014, now seen corresponding path program 1 times [2023-11-19 07:33:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489005297] [2023-11-19 07:33:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:24,922 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 07:33:24,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:24,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489005297] [2023-11-19 07:33:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489005297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:24,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:24,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:24,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427490309] [2023-11-19 07:33:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:24,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:24,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 670 [2023-11-19 07:33:24,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 220 transitions, 458 flow. Second operand has 2 states, 2 states have (on average 318.0) internal successors, (636), 2 states have internal predecessors, (636), 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 07:33:24,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:24,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 670 [2023-11-19 07:33:24,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:35,631 INFO L124 PetriNetUnfolderBase]: 51197/97039 cut-off events. [2023-11-19 07:33:35,632 INFO L125 PetriNetUnfolderBase]: For 2770/2770 co-relation queries the response was YES. [2023-11-19 07:33:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167583 conditions, 97039 events. 51197/97039 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 3199. Compared 1062337 event pairs, 40957 based on Foata normal form. 0/79947 useless extension candidates. Maximal degree in co-relation 33912. Up to 68800 conditions per place. [2023-11-19 07:33:36,589 INFO L140 encePairwiseOnDemand]: 618/670 looper letters, 75 selfloop transitions, 0 changer transitions 0/168 dead transitions. [2023-11-19 07:33:36,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 168 transitions, 504 flow [2023-11-19 07:33:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:33:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 759 transitions. [2023-11-19 07:33:36,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664179104477612 [2023-11-19 07:33:36,593 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 759 transitions. [2023-11-19 07:33:36,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 759 transitions. [2023-11-19 07:33:36,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:36,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 759 transitions. [2023-11-19 07:33:36,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 379.5) internal successors, (759), 2 states have internal predecessors, (759), 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 07:33:36,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 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 07:33:36,603 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 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 07:33:36,603 INFO L175 Difference]: Start difference. First operand has 212 places, 220 transitions, 458 flow. Second operand 2 states and 759 transitions. [2023-11-19 07:33:36,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 168 transitions, 504 flow [2023-11-19 07:33:36,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 502 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:36,619 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 352 flow [2023-11-19 07:33:36,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-11-19 07:33:36,622 INFO L281 CegarLoopForPetriNet]: 212 programPoint places, -48 predicate places. [2023-11-19 07:33:36,622 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 352 flow [2023-11-19 07:33:36,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 318.0) internal successors, (636), 2 states have internal predecessors, (636), 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 07:33:36,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:36,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:33:36,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:33:36,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2023-11-19 07:33:36,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash -545611127, now seen corresponding path program 1 times [2023-11-19 07:33:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571450461] [2023-11-19 07:33:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,675 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 07:33:36,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571450461] [2023-11-19 07:33:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571450461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:36,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:36,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041613214] [2023-11-19 07:33:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:36,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:36,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:36,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 670 [2023-11-19 07:33:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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 07:33:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 670 [2023-11-19 07:33:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand