./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx --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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:10,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:10,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 21:02:10,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:10,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:10,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:10,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:10,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:10,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:10,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:10,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:10,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:10,917 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:10,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:10,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:02:10,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:10,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:10,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:10,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:10,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:02:10,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:10,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:02:10,928 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 21:02:10,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:02:10,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:10,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:02:10,930 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:10,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:10,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:10,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:10,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:10,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:10,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:10,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:02:10,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:10,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:10,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:10,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:10,935 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:02:10,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:10,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:10,936 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_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-21 21:02:11,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:11,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:11,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:11,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:11,306 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:11,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 21:02:14,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:14,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:14,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 21:02:14,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/data/2861d6b05/1da0e224112149eb9664aa4b806a90ff/FLAGaeb0aed98 [2023-11-21 21:02:14,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/data/2861d6b05/1da0e224112149eb9664aa4b806a90ff [2023-11-21 21:02:14,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:14,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:14,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:14,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:14,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:14,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:14" (1/1) ... [2023-11-21 21:02:14,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48374fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:14, skipping insertion in model container [2023-11-21 21:02:14,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:14" (1/1) ... [2023-11-21 21:02:14,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:15,161 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:15,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:15,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:02:15,599 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:15,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:15,728 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:15,729 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:15,730 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:15,741 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:02:15,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15 WrapperNode [2023-11-21 21:02:15,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:15,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:15,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:02:15,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:02:15,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,878 INFO L138 Inliner]: procedures = 325, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-21 21:02:15,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:15,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:02:15,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:02:15,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:02:15,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:02:15,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:02:15,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:02:15,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:02:15,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (1/1) ... [2023-11-21 21:02:15,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:15,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:15,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:02:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436206a8-c9d7-4ecf-9762-10c5de6eb101/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:02:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 21:02:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:02:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:02:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 21:02:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:02:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-21 21:02:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-21 21:02:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 21:02:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 21:02:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 21:02:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 21:02:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:02:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:02:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:02:16,034 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 21:02:16,259 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:02:16,261 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:02:16,609 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:02:16,651 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:02:16,651 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:02:16,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:16 BoogieIcfgContainer [2023-11-21 21:02:16,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:02:16,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:02:16,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:02:16,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:02:16,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:14" (1/3) ... [2023-11-21 21:02:16,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b450c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:16, skipping insertion in model container [2023-11-21 21:02:16,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:15" (2/3) ... [2023-11-21 21:02:16,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b450c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:16, skipping insertion in model container [2023-11-21 21:02:16,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:16" (3/3) ... [2023-11-21 21:02:16,662 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-21 21:02:16,671 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 21:02:16,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:02:16,683 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-21 21:02:16,683 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:02:16,842 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-21 21:02:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 286 transitions, 669 flow [2023-11-21 21:02:16,998 INFO L124 PetriNetUnfolderBase]: 8/199 cut-off events. [2023-11-21 21:02:16,998 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 21:02:17,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 199 events. 8/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-11-21 21:02:17,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 286 transitions, 669 flow [2023-11-21 21:02:17,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 173 transitions, 397 flow [2023-11-21 21:02:17,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:02:17,034 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;@28786c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:02:17,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-21 21:02:17,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:02:17,044 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-11-21 21:02:17,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:02:17,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:17,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:17,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:17,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 801025672, now seen corresponding path program 1 times [2023-11-21 21:02:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360810162] [2023-11-21 21:02:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360810162] [2023-11-21 21:02:18,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360810162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:18,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194218175] [2023-11-21 21:02:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:18,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 288 [2023-11-21 21:02:18,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 173 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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) [2023-11-21 21:02:18,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:18,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 288 [2023-11-21 21:02:18,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:19,999 INFO L124 PetriNetUnfolderBase]: 1178/2722 cut-off events. [2023-11-21 21:02:20,000 INFO L125 PetriNetUnfolderBase]: For 819/1034 co-relation queries the response was YES. [2023-11-21 21:02:20,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 2722 events. 1178/2722 cut-off events. For 819/1034 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17395 event pairs, 361 based on Foata normal form. 13/2407 useless extension candidates. Maximal degree in co-relation 5081. Up to 1195 conditions per place. [2023-11-21 21:02:20,047 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 89 selfloop transitions, 21 changer transitions 0/246 dead transitions. [2023-11-21 21:02:20,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 246 transitions, 946 flow [2023-11-21 21:02:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:02:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:02:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2023-11-21 21:02:20,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8929398148148148 [2023-11-21 21:02:20,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2023-11-21 21:02:20,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2023-11-21 21:02:20,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:20,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2023-11-21 21:02:20,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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) [2023-11-21 21:02:20,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-11-21 21:02:20,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-11-21 21:02:20,108 INFO L175 Difference]: Start difference. First operand has 187 places, 173 transitions, 397 flow. Second operand 6 states and 1543 transitions. [2023-11-21 21:02:20,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 246 transitions, 946 flow [2023-11-21 21:02:20,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 246 transitions, 790 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-21 21:02:20,142 INFO L231 Difference]: Finished difference. Result has 177 places, 185 transitions, 489 flow [2023-11-21 21:02:20,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=177, PETRI_TRANSITIONS=185} [2023-11-21 21:02:20,150 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -10 predicate places. [2023-11-21 21:02:20,151 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 185 transitions, 489 flow [2023-11-21 21:02:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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) [2023-11-21 21:02:20,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:20,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:02:20,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:20,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 464122076, now seen corresponding path program 1 times [2023-11-21 21:02:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001182687] [2023-11-21 21:02:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:20,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:20,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001182687] [2023-11-21 21:02:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001182687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:20,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:20,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906911453] [2023-11-21 21:02:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:20,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 288 [2023-11-21 21:02:20,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 185 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:20,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:20,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 288 [2023-11-21 21:02:20,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:20,808 INFO L124 PetriNetUnfolderBase]: 769/2161 cut-off events. [2023-11-21 21:02:20,808 INFO L125 PetriNetUnfolderBase]: For 1147/1335 co-relation queries the response was YES. [2023-11-21 21:02:20,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2161 events. 769/2161 cut-off events. For 1147/1335 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13770 event pairs, 306 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 2955. Up to 939 conditions per place. [2023-11-21 21:02:20,843 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 41 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2023-11-21 21:02:20,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 184 transitions, 573 flow [2023-11-21 21:02:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:02:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-21 21:02:20,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8483796296296297 [2023-11-21 21:02:20,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-21 21:02:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-21 21:02:20,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:20,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-21 21:02:20,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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) [2023-11-21 21:02:20,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-21 21:02:20,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-21 21:02:20,859 INFO L175 Difference]: Start difference. First operand has 177 places, 185 transitions, 489 flow. Second operand 3 states and 733 transitions. [2023-11-21 21:02:20,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 184 transitions, 573 flow [2023-11-21 21:02:20,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 573 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 21:02:20,875 INFO L231 Difference]: Finished difference. Result has 178 places, 184 transitions, 491 flow [2023-11-21 21:02:20,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=491, PETRI_PLACES=178, PETRI_TRANSITIONS=184} [2023-11-21 21:02:20,878 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -9 predicate places. [2023-11-21 21:02:20,879 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 184 transitions, 491 flow [2023-11-21 21:02:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:20,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:20,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:20,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:02:20,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:20,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1911541757, now seen corresponding path program 1 times [2023-11-21 21:02:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143063796] [2023-11-21 21:02:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:21,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143063796] [2023-11-21 21:02:21,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143063796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:21,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:21,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665149536] [2023-11-21 21:02:21,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:21,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:21,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:21,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:21,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 288 [2023-11-21 21:02:21,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 184 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 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) [2023-11-21 21:02:21,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:21,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 288 [2023-11-21 21:02:21,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:22,320 INFO L124 PetriNetUnfolderBase]: 745/1973 cut-off events. [2023-11-21 21:02:22,320 INFO L125 PetriNetUnfolderBase]: For 1117/1295 co-relation queries the response was YES. [2023-11-21 21:02:22,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 1973 events. 745/1973 cut-off events. For 1117/1295 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12126 event pairs, 144 based on Foata normal form. 5/1804 useless extension candidates. Maximal degree in co-relation 4415. Up to 934 conditions per place. [2023-11-21 21:02:22,348 INFO L140 encePairwiseOnDemand]: 279/288 looper letters, 43 selfloop transitions, 24 changer transitions 0/206 dead transitions. [2023-11-21 21:02:22,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 206 transitions, 744 flow [2023-11-21 21:02:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:02:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:02:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1440 transitions. [2023-11-21 21:02:22,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2023-11-21 21:02:22,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1440 transitions. [2023-11-21 21:02:22,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1440 transitions. [2023-11-21 21:02:22,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:22,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1440 transitions. [2023-11-21 21:02:22,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 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) [2023-11-21 21:02:22,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-11-21 21:02:22,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-11-21 21:02:22,366 INFO L175 Difference]: Start difference. First operand has 178 places, 184 transitions, 491 flow. Second operand 6 states and 1440 transitions. [2023-11-21 21:02:22,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 206 transitions, 744 flow [2023-11-21 21:02:22,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 206 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:02:22,377 INFO L231 Difference]: Finished difference. Result has 181 places, 203 transitions, 706 flow [2023-11-21 21:02:22,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=181, PETRI_TRANSITIONS=203} [2023-11-21 21:02:22,379 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, -6 predicate places. [2023-11-21 21:02:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 203 transitions, 706 flow [2023-11-21 21:02:22,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 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) [2023-11-21 21:02:22,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:22,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:22,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:02:22,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:22,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash -24631151, now seen corresponding path program 1 times [2023-11-21 21:02:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:22,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470532932] [2023-11-21 21:02:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470532932] [2023-11-21 21:02:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470532932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:23,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:23,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:02:23,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846032636] [2023-11-21 21:02:23,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:23,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:02:23,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:02:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:24,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 288 [2023-11-21 21:02:24,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 203 transitions, 706 flow. Second operand has 10 states, 10 states have (on average 229.6) internal successors, (2296), 10 states have internal predecessors, (2296), 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) [2023-11-21 21:02:24,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:24,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 288 [2023-11-21 21:02:24,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:25,939 INFO L124 PetriNetUnfolderBase]: 1649/4209 cut-off events. [2023-11-21 21:02:25,939 INFO L125 PetriNetUnfolderBase]: For 2441/2689 co-relation queries the response was YES. [2023-11-21 21:02:25,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10264 conditions, 4209 events. 1649/4209 cut-off events. For 2441/2689 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29875 event pairs, 409 based on Foata normal form. 50/3679 useless extension candidates. Maximal degree in co-relation 6630. Up to 997 conditions per place. [2023-11-21 21:02:25,987 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 169 selfloop transitions, 26 changer transitions 0/325 dead transitions. [2023-11-21 21:02:25,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 325 transitions, 1665 flow [2023-11-21 21:02:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 21:02:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-21 21:02:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3784 transitions. [2023-11-21 21:02:25,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8211805555555556 [2023-11-21 21:02:25,999 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3784 transitions. [2023-11-21 21:02:26,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3784 transitions. [2023-11-21 21:02:26,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:26,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3784 transitions. [2023-11-21 21:02:26,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 236.5) internal successors, (3784), 16 states have internal predecessors, (3784), 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) [2023-11-21 21:02:26,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 288.0) internal successors, (4896), 17 states have internal predecessors, (4896), 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) [2023-11-21 21:02:26,027 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 288.0) internal successors, (4896), 17 states have internal predecessors, (4896), 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) [2023-11-21 21:02:26,028 INFO L175 Difference]: Start difference. First operand has 181 places, 203 transitions, 706 flow. Second operand 16 states and 3784 transitions. [2023-11-21 21:02:26,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 325 transitions, 1665 flow [2023-11-21 21:02:26,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 325 transitions, 1622 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 21:02:26,043 INFO L231 Difference]: Finished difference. Result has 201 places, 226 transitions, 895 flow [2023-11-21 21:02:26,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=895, PETRI_PLACES=201, PETRI_TRANSITIONS=226} [2023-11-21 21:02:26,044 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 14 predicate places. [2023-11-21 21:02:26,045 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 226 transitions, 895 flow [2023-11-21 21:02:26,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 229.6) internal successors, (2296), 10 states have internal predecessors, (2296), 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) [2023-11-21 21:02:26,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:26,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:26,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:02:26,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:26,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:26,048 INFO L85 PathProgramCache]: Analyzing trace with hash 295254821, now seen corresponding path program 2 times [2023-11-21 21:02:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:26,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107387396] [2023-11-21 21:02:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:26,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107387396] [2023-11-21 21:02:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107387396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:27,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 21:02:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919051020] [2023-11-21 21:02:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:27,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:27,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:29,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-21 21:02:29,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 226 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:29,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:29,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-21 21:02:29,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:30,936 INFO L124 PetriNetUnfolderBase]: 2065/5243 cut-off events. [2023-11-21 21:02:30,937 INFO L125 PetriNetUnfolderBase]: For 6069/6368 co-relation queries the response was YES. [2023-11-21 21:02:30,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 5243 events. 2065/5243 cut-off events. For 6069/6368 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38675 event pairs, 490 based on Foata normal form. 65/4613 useless extension candidates. Maximal degree in co-relation 9749. Up to 1877 conditions per place. [2023-11-21 21:02:31,010 INFO L140 encePairwiseOnDemand]: 271/288 looper letters, 215 selfloop transitions, 75 changer transitions 0/413 dead transitions. [2023-11-21 21:02:31,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 413 transitions, 2427 flow [2023-11-21 21:02:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 21:02:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-21 21:02:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3420 transitions. [2023-11-21 21:02:31,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2023-11-21 21:02:31,023 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3420 transitions. [2023-11-21 21:02:31,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3420 transitions. [2023-11-21 21:02:31,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:31,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3420 transitions. [2023-11-21 21:02:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 228.0) internal successors, (3420), 15 states have internal predecessors, (3420), 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) [2023-11-21 21:02:31,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 288.0) internal successors, (4608), 16 states have internal predecessors, (4608), 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) [2023-11-21 21:02:31,059 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 288.0) internal successors, (4608), 16 states have internal predecessors, (4608), 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) [2023-11-21 21:02:31,059 INFO L175 Difference]: Start difference. First operand has 201 places, 226 transitions, 895 flow. Second operand 15 states and 3420 transitions. [2023-11-21 21:02:31,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 413 transitions, 2427 flow [2023-11-21 21:02:31,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 413 transitions, 2410 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 21:02:31,122 INFO L231 Difference]: Finished difference. Result has 225 places, 279 transitions, 1635 flow [2023-11-21 21:02:31,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1635, PETRI_PLACES=225, PETRI_TRANSITIONS=279} [2023-11-21 21:02:31,126 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 38 predicate places. [2023-11-21 21:02:31,126 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 279 transitions, 1635 flow [2023-11-21 21:02:31,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:31,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:31,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:31,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:02:31,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:31,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1943601061, now seen corresponding path program 3 times [2023-11-21 21:02:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81943258] [2023-11-21 21:02:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:32,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81943258] [2023-11-21 21:02:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81943258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:32,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 21:02:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637909058] [2023-11-21 21:02:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:32,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:34,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-21 21:02:34,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 279 transitions, 1635 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:34,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:34,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-21 21:02:34,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:37,000 INFO L124 PetriNetUnfolderBase]: 2381/6607 cut-off events. [2023-11-21 21:02:37,001 INFO L125 PetriNetUnfolderBase]: For 14251/14574 co-relation queries the response was YES. [2023-11-21 21:02:37,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19524 conditions, 6607 events. 2381/6607 cut-off events. For 14251/14574 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 53812 event pairs, 557 based on Foata normal form. 137/5881 useless extension candidates. Maximal degree in co-relation 18636. Up to 2057 conditions per place. [2023-11-21 21:02:37,152 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 214 selfloop transitions, 103 changer transitions 0/440 dead transitions. [2023-11-21 21:02:37,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 440 transitions, 3145 flow [2023-11-21 21:02:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:02:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-21 21:02:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3201 transitions. [2023-11-21 21:02:37,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7938988095238095 [2023-11-21 21:02:37,164 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3201 transitions. [2023-11-21 21:02:37,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3201 transitions. [2023-11-21 21:02:37,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:37,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3201 transitions. [2023-11-21 21:02:37,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 228.64285714285714) internal successors, (3201), 14 states have internal predecessors, (3201), 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) [2023-11-21 21:02:37,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 288.0) internal successors, (4320), 15 states have internal predecessors, (4320), 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) [2023-11-21 21:02:37,204 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 288.0) internal successors, (4320), 15 states have internal predecessors, (4320), 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) [2023-11-21 21:02:37,204 INFO L175 Difference]: Start difference. First operand has 225 places, 279 transitions, 1635 flow. Second operand 14 states and 3201 transitions. [2023-11-21 21:02:37,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 440 transitions, 3145 flow [2023-11-21 21:02:37,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 440 transitions, 3139 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-21 21:02:37,306 INFO L231 Difference]: Finished difference. Result has 250 places, 322 transitions, 2495 flow [2023-11-21 21:02:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2495, PETRI_PLACES=250, PETRI_TRANSITIONS=322} [2023-11-21 21:02:37,310 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 63 predicate places. [2023-11-21 21:02:37,311 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 322 transitions, 2495 flow [2023-11-21 21:02:37,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:37,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:37,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:37,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:02:37,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:37,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 655742878, now seen corresponding path program 1 times [2023-11-21 21:02:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815484558] [2023-11-21 21:02:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815484558] [2023-11-21 21:02:38,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815484558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:38,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:38,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 21:02:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405350179] [2023-11-21 21:02:38,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:38,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:41,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-21 21:02:41,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 322 transitions, 2495 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:41,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:41,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-21 21:02:41,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:43,691 INFO L124 PetriNetUnfolderBase]: 2745/7254 cut-off events. [2023-11-21 21:02:43,692 INFO L125 PetriNetUnfolderBase]: For 23827/24348 co-relation queries the response was YES. [2023-11-21 21:02:43,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 7254 events. 2745/7254 cut-off events. For 23827/24348 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 59064 event pairs, 728 based on Foata normal form. 159/6400 useless extension candidates. Maximal degree in co-relation 23556. Up to 2159 conditions per place. [2023-11-21 21:02:43,791 INFO L140 encePairwiseOnDemand]: 271/288 looper letters, 273 selfloop transitions, 121 changer transitions 0/517 dead transitions. [2023-11-21 21:02:43,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 517 transitions, 4594 flow [2023-11-21 21:02:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 21:02:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-21 21:02:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4526 transitions. [2023-11-21 21:02:43,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7857638888888889 [2023-11-21 21:02:43,809 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4526 transitions. [2023-11-21 21:02:43,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4526 transitions. [2023-11-21 21:02:43,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:43,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4526 transitions. [2023-11-21 21:02:43,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 226.3) internal successors, (4526), 20 states have internal predecessors, (4526), 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) [2023-11-21 21:02:43,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 288.0) internal successors, (6048), 21 states have internal predecessors, (6048), 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) [2023-11-21 21:02:43,844 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 288.0) internal successors, (6048), 21 states have internal predecessors, (6048), 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) [2023-11-21 21:02:43,844 INFO L175 Difference]: Start difference. First operand has 250 places, 322 transitions, 2495 flow. Second operand 20 states and 4526 transitions. [2023-11-21 21:02:43,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 517 transitions, 4594 flow [2023-11-21 21:02:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 517 transitions, 4592 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 21:02:44,081 INFO L231 Difference]: Finished difference. Result has 284 places, 357 transitions, 3420 flow [2023-11-21 21:02:44,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3420, PETRI_PLACES=284, PETRI_TRANSITIONS=357} [2023-11-21 21:02:44,083 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2023-11-21 21:02:44,084 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 357 transitions, 3420 flow [2023-11-21 21:02:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:44,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:44,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:02:44,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:44,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1581598266, now seen corresponding path program 2 times [2023-11-21 21:02:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:44,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843791106] [2023-11-21 21:02:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:45,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:45,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843791106] [2023-11-21 21:02:45,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843791106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:45,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:45,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 21:02:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847458902] [2023-11-21 21:02:45,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:45,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:45,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:48,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-21 21:02:48,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 357 transitions, 3420 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:48,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:48,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-21 21:02:48,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:51,860 INFO L124 PetriNetUnfolderBase]: 3346/9261 cut-off events. [2023-11-21 21:02:51,860 INFO L125 PetriNetUnfolderBase]: For 44798/45335 co-relation queries the response was YES. [2023-11-21 21:02:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33243 conditions, 9261 events. 3346/9261 cut-off events. For 44798/45335 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 81863 event pairs, 908 based on Foata normal form. 233/8179 useless extension candidates. Maximal degree in co-relation 32816. Up to 2235 conditions per place. [2023-11-21 21:02:51,981 INFO L140 encePairwiseOnDemand]: 270/288 looper letters, 304 selfloop transitions, 162 changer transitions 0/589 dead transitions. [2023-11-21 21:02:51,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 589 transitions, 6301 flow [2023-11-21 21:02:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 21:02:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-21 21:02:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4113 transitions. [2023-11-21 21:02:51,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7934027777777778 [2023-11-21 21:02:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4113 transitions. [2023-11-21 21:02:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4113 transitions. [2023-11-21 21:02:51,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:52,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4113 transitions. [2023-11-21 21:02:52,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 228.5) internal successors, (4113), 18 states have internal predecessors, (4113), 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) [2023-11-21 21:02:52,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 288.0) internal successors, (5472), 19 states have internal predecessors, (5472), 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) [2023-11-21 21:02:52,025 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 288.0) internal successors, (5472), 19 states have internal predecessors, (5472), 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) [2023-11-21 21:02:52,025 INFO L175 Difference]: Start difference. First operand has 284 places, 357 transitions, 3420 flow. Second operand 18 states and 4113 transitions. [2023-11-21 21:02:52,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 589 transitions, 6301 flow [2023-11-21 21:02:52,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 589 transitions, 6199 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-21 21:02:52,417 INFO L231 Difference]: Finished difference. Result has 310 places, 415 transitions, 4829 flow [2023-11-21 21:02:52,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=3331, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4829, PETRI_PLACES=310, PETRI_TRANSITIONS=415} [2023-11-21 21:02:52,420 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 123 predicate places. [2023-11-21 21:02:52,421 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 415 transitions, 4829 flow [2023-11-21 21:02:52,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:52,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:52,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 21:02:52,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:02:52,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1928800710, now seen corresponding path program 3 times [2023-11-21 21:02:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935700140] [2023-11-21 21:02:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935700140] [2023-11-21 21:02:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935700140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:53,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 21:02:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697591220] [2023-11-21 21:02:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:53,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:53,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:55,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 288 [2023-11-21 21:02:55,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 415 transitions, 4829 flow. Second operand has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:02:55,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:55,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 288 [2023-11-21 21:02:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:00,018 INFO L124 PetriNetUnfolderBase]: 4477/12542 cut-off events. [2023-11-21 21:03:00,018 INFO L125 PetriNetUnfolderBase]: For 75240/75934 co-relation queries the response was YES. [2023-11-21 21:03:00,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46503 conditions, 12542 events. 4477/12542 cut-off events. For 75240/75934 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 117325 event pairs, 1264 based on Foata normal form. 132/10925 useless extension candidates. Maximal degree in co-relation 45416. Up to 2875 conditions per place. [2023-11-21 21:03:00,228 INFO L140 encePairwiseOnDemand]: 271/288 looper letters, 400 selfloop transitions, 216 changer transitions 0/739 dead transitions. [2023-11-21 21:03:00,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 739 transitions, 9800 flow [2023-11-21 21:03:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-21 21:03:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-21 21:03:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6503 transitions. [2023-11-21 21:03:00,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7786159003831418 [2023-11-21 21:03:00,245 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6503 transitions. [2023-11-21 21:03:00,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6503 transitions. [2023-11-21 21:03:00,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:00,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6503 transitions. [2023-11-21 21:03:00,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 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) [2023-11-21 21:03:00,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 288.0) internal successors, (8640), 30 states have internal predecessors, (8640), 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) [2023-11-21 21:03:00,290 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 288.0) internal successors, (8640), 30 states have internal predecessors, (8640), 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) [2023-11-21 21:03:00,291 INFO L175 Difference]: Start difference. First operand has 310 places, 415 transitions, 4829 flow. Second operand 29 states and 6503 transitions. [2023-11-21 21:03:00,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 739 transitions, 9800 flow [2023-11-21 21:03:00,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 739 transitions, 9549 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-11-21 21:03:00,896 INFO L231 Difference]: Finished difference. Result has 355 places, 518 transitions, 7354 flow [2023-11-21 21:03:00,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7354, PETRI_PLACES=355, PETRI_TRANSITIONS=518} [2023-11-21 21:03:00,897 INFO L281 CegarLoopForPetriNet]: 187 programPoint places, 168 predicate places. [2023-11-21 21:03:00,897 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 518 transitions, 7354 flow [2023-11-21 21:03:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 216.5) internal successors, (2598), 12 states have internal predecessors, (2598), 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) [2023-11-21 21:03:00,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:00,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:03:00,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 21:03:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash -479611000, now seen corresponding path program 4 times [2023-11-21 21:03:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595276007] [2023-11-21 21:03:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat