./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:31:43,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:31:43,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:31:43,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:31:43,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:31:43,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:31:43,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:31:43,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:31:43,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:31:43,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:31:43,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:31:43,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:31:43,919 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:31:43,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:31:43,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:31:43,921 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:31:43,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:31:43,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:31:43,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:31:43,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:31:43,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:31:43,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:31:43,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:31:43,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:31:43,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:31:43,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:31:43,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:31:43,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:31:43,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:43,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:31:43,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:31:43,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:31:43,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:31:43,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:31:43,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:31:43,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:31:43,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:31:43,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:31:43,941 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:31:43,941 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_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2023-11-06 22:31:44,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:31:44,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:31:44,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:31:44,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:31:44,306 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:31:44,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-06 22:31:47,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:47,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:47,821 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2023-11-06 22:31:47,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/data/12458c048/1ed2cc30f96b44119eb5815dcdf1685c/FLAG7bb4e982b [2023-11-06 22:31:47,878 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/data/12458c048/1ed2cc30f96b44119eb5815dcdf1685c [2023-11-06 22:31:47,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:47,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:47,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:47,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:47,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:47,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:47" (1/1) ... [2023-11-06 22:31:47,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566cdca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:47, skipping insertion in model container [2023-11-06 22:31:47,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:47" (1/1) ... [2023-11-06 22:31:47,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:48,185 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:31:48,392 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-11-06 22:31:48,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:48,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:31:48,459 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:31:48,501 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-11-06 22:31:48,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:48,560 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:48,560 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:48,560 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:48,569 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:31:48,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48 WrapperNode [2023-11-06 22:31:48,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:48,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:48,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:31:48,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:31:48,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,646 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2023-11-06 22:31:48,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:48,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:31:48,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:31:48,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:31:48,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:31:48,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:31:48,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:31:48,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:31:48,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (1/1) ... [2023-11-06 22:31:48,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:48,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:31:48,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:31:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:31:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:31:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:31:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:31:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-06 22:31:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-06 22:31:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:31:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:31:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:31:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:31:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:31:48,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:31:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-06 22:31:48,847 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-06 22:31:48,849 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:31:49,018 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:31:49,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:31:49,262 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:31:49,354 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:31:49,354 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:31:49,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:49 BoogieIcfgContainer [2023-11-06 22:31:49,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:31:49,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:31:49,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:31:49,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:31:49,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:31:47" (1/3) ... [2023-11-06 22:31:49,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381f3bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:49, skipping insertion in model container [2023-11-06 22:31:49,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:48" (2/3) ... [2023-11-06 22:31:49,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381f3bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:49, skipping insertion in model container [2023-11-06 22:31:49,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:49" (3/3) ... [2023-11-06 22:31:49,372 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-11-06 22:31:49,381 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:31:49,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:31:49,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:31:49,394 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:31:49,494 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:31:49,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 244 flow [2023-11-06 22:31:49,657 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-11-06 22:31:49,658 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:31:49,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-06 22:31:49,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 108 transitions, 244 flow [2023-11-06 22:31:49,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 90 transitions, 201 flow [2023-11-06 22:31:49,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:31:49,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 90 transitions, 201 flow [2023-11-06 22:31:49,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 90 transitions, 201 flow [2023-11-06 22:31:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 90 transitions, 201 flow [2023-11-06 22:31:49,750 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-06 22:31:49,751 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:31:49,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 90 events. 2/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-06 22:31:49,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 2408 [2023-11-06 22:31:53,037 INFO L134 LiptonReduction]: Checked pairs total: 7778 [2023-11-06 22:31:53,038 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-06 22:31:53,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:53,076 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=LoopsAndPotentialCycles, 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;@35a01be7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:53,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:31:53,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:31:53,085 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-06 22:31:53,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:53,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:53,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:53,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:53,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1442868252, now seen corresponding path program 1 times [2023-11-06 22:31:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671475766] [2023-11-06 22:31:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:53,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671475766] [2023-11-06 22:31:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671475766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:53,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:53,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891440688] [2023-11-06 22:31:53,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:53,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:53,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:53,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 170 [2023-11-06 22:31:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2023-11-06 22:31:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 170 [2023-11-06 22:31:53,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:55,570 INFO L124 PetriNetUnfolderBase]: 9481/14550 cut-off events. [2023-11-06 22:31:55,570 INFO L125 PetriNetUnfolderBase]: For 1372/1372 co-relation queries the response was YES. [2023-11-06 22:31:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28836 conditions, 14550 events. 9481/14550 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 97711 event pairs, 1851 based on Foata normal form. 1120/14914 useless extension candidates. Maximal degree in co-relation 22448. Up to 6517 conditions per place. [2023-11-06 22:31:55,694 INFO L140 encePairwiseOnDemand]: 160/170 looper letters, 115 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2023-11-06 22:31:55,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 137 transitions, 618 flow [2023-11-06 22:31:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:31:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 724 transitions. [2023-11-06 22:31:55,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6084033613445378 [2023-11-06 22:31:55,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 724 transitions. [2023-11-06 22:31:55,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 724 transitions. [2023-11-06 22:31:55,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:55,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 724 transitions. [2023-11-06 22:31:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.42857142857143) internal successors, (724), 7 states have internal predecessors, (724), 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) [2023-11-06 22:31:55,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2023-11-06 22:31:55,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2023-11-06 22:31:55,740 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 99 flow. Second operand 7 states and 724 transitions. [2023-11-06 22:31:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 137 transitions, 618 flow [2023-11-06 22:31:55,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 137 transitions, 571 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:31:55,769 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 184 flow [2023-11-06 22:31:55,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-11-06 22:31:55,775 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-06 22:31:55,776 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 184 flow [2023-11-06 22:31:55,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2023-11-06 22:31:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:55,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:55,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:31:55,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:55,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1015413811, now seen corresponding path program 1 times [2023-11-06 22:31:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:55,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948948881] [2023-11-06 22:31:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948948881] [2023-11-06 22:31:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948948881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:55,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391806678] [2023-11-06 22:31:55,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:55,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 170 [2023-11-06 22:31:55,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-06 22:31:55,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:55,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 170 [2023-11-06 22:31:55,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:56,735 INFO L124 PetriNetUnfolderBase]: 3521/6234 cut-off events. [2023-11-06 22:31:56,735 INFO L125 PetriNetUnfolderBase]: For 1594/1710 co-relation queries the response was YES. [2023-11-06 22:31:56,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13346 conditions, 6234 events. 3521/6234 cut-off events. For 1594/1710 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 48950 event pairs, 1266 based on Foata normal form. 618/6051 useless extension candidates. Maximal degree in co-relation 8713. Up to 2671 conditions per place. [2023-11-06 22:31:56,803 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 38 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-06 22:31:56,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 310 flow [2023-11-06 22:31:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-11-06 22:31:56,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137254901960785 [2023-11-06 22:31:56,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-11-06 22:31:56,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-11-06 22:31:56,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:56,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-11-06 22:31:56,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-11-06 22:31:56,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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) [2023-11-06 22:31:56,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 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) [2023-11-06 22:31:56,820 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 184 flow. Second operand 3 states and 313 transitions. [2023-11-06 22:31:56,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 310 flow [2023-11-06 22:31:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:31:56,841 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 200 flow [2023-11-06 22:31:56,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-11-06 22:31:56,847 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2023-11-06 22:31:56,848 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 200 flow [2023-11-06 22:31:56,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-06 22:31:56,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:56,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:56,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:31:56,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:56,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1210480171, now seen corresponding path program 2 times [2023-11-06 22:31:56,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238331080] [2023-11-06 22:31:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238331080] [2023-11-06 22:31:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238331080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114487793] [2023-11-06 22:31:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:57,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:57,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:57,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:57,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 170 [2023-11-06 22:31:57,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2023-11-06 22:31:57,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:57,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 170 [2023-11-06 22:31:57,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:57,507 INFO L124 PetriNetUnfolderBase]: 1378/3038 cut-off events. [2023-11-06 22:31:57,507 INFO L125 PetriNetUnfolderBase]: For 2119/2156 co-relation queries the response was YES. [2023-11-06 22:31:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 3038 events. 1378/3038 cut-off events. For 2119/2156 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24605 event pairs, 358 based on Foata normal form. 215/2923 useless extension candidates. Maximal degree in co-relation 5162. Up to 1013 conditions per place. [2023-11-06 22:31:57,526 INFO L140 encePairwiseOnDemand]: 163/170 looper letters, 52 selfloop transitions, 9 changer transitions 5/93 dead transitions. [2023-11-06 22:31:57,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 452 flow [2023-11-06 22:31:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2023-11-06 22:31:57,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2023-11-06 22:31:57,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 432 transitions. [2023-11-06 22:31:57,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 432 transitions. [2023-11-06 22:31:57,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:57,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 432 transitions. [2023-11-06 22:31:57,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-11-06 22:31:57,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2023-11-06 22:31:57,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2023-11-06 22:31:57,535 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 200 flow. Second operand 4 states and 432 transitions. [2023-11-06 22:31:57,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 452 flow [2023-11-06 22:31:57,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:57,545 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 258 flow [2023-11-06 22:31:57,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-06 22:31:57,546 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-06 22:31:57,546 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 258 flow [2023-11-06 22:31:57,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2023-11-06 22:31:57,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:57,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:31:57,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:57,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash 32544881, now seen corresponding path program 1 times [2023-11-06 22:31:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837356710] [2023-11-06 22:31:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837356710] [2023-11-06 22:31:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837356710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:57,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:57,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:57,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649762662] [2023-11-06 22:31:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:57,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:57,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:57,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 170 [2023-11-06 22:31:57,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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) [2023-11-06 22:31:57,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:57,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 170 [2023-11-06 22:31:57,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:58,364 INFO L124 PetriNetUnfolderBase]: 2323/4506 cut-off events. [2023-11-06 22:31:58,365 INFO L125 PetriNetUnfolderBase]: For 4920/5097 co-relation queries the response was YES. [2023-11-06 22:31:58,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12920 conditions, 4506 events. 2323/4506 cut-off events. For 4920/5097 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 32664 event pairs, 461 based on Foata normal form. 386/4778 useless extension candidates. Maximal degree in co-relation 9791. Up to 2051 conditions per place. [2023-11-06 22:31:58,397 INFO L140 encePairwiseOnDemand]: 161/170 looper letters, 111 selfloop transitions, 36 changer transitions 16/169 dead transitions. [2023-11-06 22:31:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 169 transitions, 1070 flow [2023-11-06 22:31:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:31:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 703 transitions. [2023-11-06 22:31:58,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5907563025210084 [2023-11-06 22:31:58,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 703 transitions. [2023-11-06 22:31:58,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 703 transitions. [2023-11-06 22:31:58,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:58,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 703 transitions. [2023-11-06 22:31:58,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 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) [2023-11-06 22:31:58,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2023-11-06 22:31:58,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2023-11-06 22:31:58,459 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 258 flow. Second operand 7 states and 703 transitions. [2023-11-06 22:31:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 169 transitions, 1070 flow [2023-11-06 22:31:58,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 169 transitions, 1070 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:31:58,475 INFO L231 Difference]: Finished difference. Result has 69 places, 84 transitions, 516 flow [2023-11-06 22:31:58,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=69, PETRI_TRANSITIONS=84} [2023-11-06 22:31:58,476 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-06 22:31:58,477 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 84 transitions, 516 flow [2023-11-06 22:31:58,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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) [2023-11-06 22:31:58,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:58,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:31:58,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:58,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2104680126, now seen corresponding path program 1 times [2023-11-06 22:31:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:58,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497038869] [2023-11-06 22:31:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:58,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:58,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497038869] [2023-11-06 22:31:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497038869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:58,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221768160] [2023-11-06 22:31:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:58,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:58,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 170 [2023-11-06 22:31:58,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 84 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-06 22:31:58,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:58,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 170 [2023-11-06 22:31:58,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:59,384 INFO L124 PetriNetUnfolderBase]: 1775/3750 cut-off events. [2023-11-06 22:31:59,384 INFO L125 PetriNetUnfolderBase]: For 6113/6187 co-relation queries the response was YES. [2023-11-06 22:31:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12376 conditions, 3750 events. 1775/3750 cut-off events. For 6113/6187 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28009 event pairs, 409 based on Foata normal form. 108/3831 useless extension candidates. Maximal degree in co-relation 10572. Up to 1779 conditions per place. [2023-11-06 22:31:59,425 INFO L140 encePairwiseOnDemand]: 162/170 looper letters, 97 selfloop transitions, 38 changer transitions 4/145 dead transitions. [2023-11-06 22:31:59,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 145 transitions, 1071 flow [2023-11-06 22:31:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:31:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2023-11-06 22:31:59,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-11-06 22:31:59,429 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 596 transitions. [2023-11-06 22:31:59,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 596 transitions. [2023-11-06 22:31:59,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:59,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 596 transitions. [2023-11-06 22:31:59,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 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) [2023-11-06 22:31:59,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2023-11-06 22:31:59,437 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2023-11-06 22:31:59,437 INFO L175 Difference]: Start difference. First operand has 69 places, 84 transitions, 516 flow. Second operand 6 states and 596 transitions. [2023-11-06 22:31:59,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 145 transitions, 1071 flow [2023-11-06 22:31:59,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 1057 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-06 22:31:59,473 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 634 flow [2023-11-06 22:31:59,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-11-06 22:31:59,474 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-06 22:31:59,474 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 634 flow [2023-11-06 22:31:59,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-06 22:31:59,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:59,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:31:59,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:31:59,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1788598355, now seen corresponding path program 1 times [2023-11-06 22:31:59,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:59,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338684007] [2023-11-06 22:31:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:59,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338684007] [2023-11-06 22:31:59,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338684007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:59,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611766757] [2023-11-06 22:31:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:59,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 170 [2023-11-06 22:31:59,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-06 22:31:59,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:59,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 170 [2023-11-06 22:31:59,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:00,228 INFO L124 PetriNetUnfolderBase]: 1716/3603 cut-off events. [2023-11-06 22:32:00,228 INFO L125 PetriNetUnfolderBase]: For 7240/7365 co-relation queries the response was YES. [2023-11-06 22:32:00,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 3603 events. 1716/3603 cut-off events. For 7240/7365 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26535 event pairs, 363 based on Foata normal form. 163/3721 useless extension candidates. Maximal degree in co-relation 11505. Up to 1749 conditions per place. [2023-11-06 22:32:00,264 INFO L140 encePairwiseOnDemand]: 162/170 looper letters, 102 selfloop transitions, 39 changer transitions 6/154 dead transitions. [2023-11-06 22:32:00,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 154 transitions, 1207 flow [2023-11-06 22:32:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:32:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:32:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-11-06 22:32:00,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911764705882353 [2023-11-06 22:32:00,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-11-06 22:32:00,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-11-06 22:32:00,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:00,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-11-06 22:32:00,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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) [2023-11-06 22:32:00,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2023-11-06 22:32:00,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2023-11-06 22:32:00,275 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 634 flow. Second operand 6 states and 603 transitions. [2023-11-06 22:32:00,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 154 transitions, 1207 flow [2023-11-06 22:32:00,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 154 transitions, 1151 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:32:00,307 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 707 flow [2023-11-06 22:32:00,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=707, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2023-11-06 22:32:00,311 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-11-06 22:32:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 707 flow [2023-11-06 22:32:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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) [2023-11-06 22:32:00,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:00,313 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] [2023-11-06 22:32:00,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:32:00,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:32:00,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2093998886, now seen corresponding path program 1 times [2023-11-06 22:32:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:00,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48287605] [2023-11-06 22:32:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:00,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:00,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48287605] [2023-11-06 22:32:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48287605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098584865] [2023-11-06 22:32:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:00,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:00,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 170 [2023-11-06 22:32:00,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 707 flow. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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) [2023-11-06 22:32:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:00,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 170 [2023-11-06 22:32:00,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:00,905 INFO L124 PetriNetUnfolderBase]: 625/2070 cut-off events. [2023-11-06 22:32:00,906 INFO L125 PetriNetUnfolderBase]: For 4540/4689 co-relation queries the response was YES. [2023-11-06 22:32:00,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6803 conditions, 2070 events. 625/2070 cut-off events. For 4540/4689 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18158 event pairs, 269 based on Foata normal form. 197/2219 useless extension candidates. Maximal degree in co-relation 6428. Up to 728 conditions per place. [2023-11-06 22:32:00,924 INFO L140 encePairwiseOnDemand]: 163/170 looper letters, 38 selfloop transitions, 7 changer transitions 20/111 dead transitions. [2023-11-06 22:32:00,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 814 flow [2023-11-06 22:32:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:32:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:32:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2023-11-06 22:32:00,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6058823529411764 [2023-11-06 22:32:00,928 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2023-11-06 22:32:00,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2023-11-06 22:32:00,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:00,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2023-11-06 22:32:00,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2023-11-06 22:32:00,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2023-11-06 22:32:00,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2023-11-06 22:32:00,934 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 707 flow. Second operand 5 states and 515 transitions. [2023-11-06 22:32:00,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 814 flow [2023-11-06 22:32:00,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 771 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:32:00,960 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 520 flow [2023-11-06 22:32:00,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-11-06 22:32:00,961 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-11-06 22:32:00,961 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 520 flow [2023-11-06 22:32:00,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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) [2023-11-06 22:32:00,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:00,962 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] [2023-11-06 22:32:00,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:32:00,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:32:00,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash -564765068, now seen corresponding path program 2 times [2023-11-06 22:32:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:00,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475493750] [2023-11-06 22:32:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475493750] [2023-11-06 22:32:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475493750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:01,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997299886] [2023-11-06 22:32:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:01,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:01,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 170 [2023-11-06 22:32:01,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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) [2023-11-06 22:32:01,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:01,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 170 [2023-11-06 22:32:01,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:01,261 INFO L124 PetriNetUnfolderBase]: 260/983 cut-off events. [2023-11-06 22:32:01,261 INFO L125 PetriNetUnfolderBase]: For 2558/2558 co-relation queries the response was YES. [2023-11-06 22:32:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 983 events. 260/983 cut-off events. For 2558/2558 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7018 event pairs, 100 based on Foata normal form. 22/993 useless extension candidates. Maximal degree in co-relation 3332. Up to 289 conditions per place. [2023-11-06 22:32:01,267 INFO L140 encePairwiseOnDemand]: 163/170 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-11-06 22:32:01,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 450 flow [2023-11-06 22:32:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:32:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:32:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2023-11-06 22:32:01,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952941176470589 [2023-11-06 22:32:01,271 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2023-11-06 22:32:01,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2023-11-06 22:32:01,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:01,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2023-11-06 22:32:01,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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) [2023-11-06 22:32:01,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2023-11-06 22:32:01,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2023-11-06 22:32:01,277 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 520 flow. Second operand 5 states and 506 transitions. [2023-11-06 22:32:01,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 450 flow [2023-11-06 22:32:01,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 382 flow, removed 1 selfloop flow, removed 16 redundant places. [2023-11-06 22:32:01,291 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-11-06 22:32:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-11-06 22:32:01,292 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-06 22:32:01,292 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-11-06 22:32:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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) [2023-11-06 22:32:01,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-06 22:32:01,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-06 22:32:01,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-06 22:32:01,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-06 22:32:01,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-06 22:32:01,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-06 22:32:01,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-06 22:32:01,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:32:01,298 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-11-06 22:32:01,304 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:32:01,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:32:01,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:32:01 BasicIcfg [2023-11-06 22:32:01,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:32:01,309 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:32:01,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:32:01,310 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:32:01,310 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:49" (3/4) ... [2023-11-06 22:32:01,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:32:01,315 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-06 22:32:01,316 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-06 22:32:01,321 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-06 22:32:01,321 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:32:01,321 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:32:01,322 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:32:01,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:32:01,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:32:01,371 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:32:01,371 INFO L158 Benchmark]: Toolchain (without parser) took 13485.62ms. Allocated memory was 148.9MB in the beginning and 526.4MB in the end (delta: 377.5MB). Free memory was 104.7MB in the beginning and 238.8MB in the end (delta: -134.2MB). Peak memory consumption was 246.3MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,372 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:32:01,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.13ms. Allocated memory is still 148.9MB. Free memory was 104.5MB in the beginning and 84.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.11ms. Allocated memory is still 148.9MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,373 INFO L158 Benchmark]: Boogie Preprocessor took 67.40ms. Allocated memory is still 148.9MB. Free memory was 81.9MB in the beginning and 80.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,374 INFO L158 Benchmark]: RCFGBuilder took 646.93ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 106.8MB in the end (delta: -26.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,374 INFO L158 Benchmark]: TraceAbstraction took 11944.16ms. Allocated memory was 148.9MB in the beginning and 526.4MB in the end (delta: 377.5MB). Free memory was 106.2MB in the beginning and 242.0MB in the end (delta: -135.8MB). Peak memory consumption was 241.7MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,374 INFO L158 Benchmark]: Witness Printer took 61.38ms. Allocated memory is still 526.4MB. Free memory was 242.0MB in the beginning and 238.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:32:01,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.13ms. Allocated memory is still 148.9MB. Free memory was 104.5MB in the beginning and 84.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.11ms. Allocated memory is still 148.9MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.40ms. Allocated memory is still 148.9MB. Free memory was 81.9MB in the beginning and 80.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 646.93ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 106.8MB in the end (delta: -26.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11944.16ms. Allocated memory was 148.9MB in the beginning and 526.4MB in the end (delta: 377.5MB). Free memory was 106.2MB in the beginning and 242.0MB in the end (delta: -135.8MB). Peak memory consumption was 241.7MB. Max. memory is 16.1GB. * Witness Printer took 61.38ms. Allocated memory is still 526.4MB. Free memory was 242.0MB in the beginning and 238.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 101 PlacesBefore, 50 PlacesAfterwards, 90 TransitionsBefore, 39 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 7778 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3978, independent: 3768, independent conditional: 0, independent unconditional: 3768, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1334, independent: 1302, independent conditional: 0, independent unconditional: 1302, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3978, independent: 2466, independent conditional: 0, independent unconditional: 2466, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 236, Positive cache size: 215, Positive conditional cache size: 0, Positive unconditional cache size: 215, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 739]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 563 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 503 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1367 IncrementalHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 35 mSDtfsCounter, 1367 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=707occurred in iteration=6, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:32:01,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2d4849-0ddf-4d8d-885b-6c3771011018/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE