./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:14,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:14,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:02:14,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:14,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:14,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:14,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:14,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:14,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:02:14,912 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:02:14,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:14,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:14,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:14,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:14,917 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:14,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:14,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:02:14,918 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:14,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:14,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:14,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:14,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:02:14,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:14,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:02:14,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:14,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:02:14,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:14,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:14,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:14,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:14,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:14,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:14,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:14,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:14,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:02:14,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:14,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:14,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:14,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:14,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:02:14,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:14,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:14,928 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_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2023-11-21 21:02:15,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:15,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:15,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:15,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:15,299 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:15,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:02:18,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:18,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:18,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:02:18,773 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/data/4bf17b2a6/72cbabd4f06141c6a4c0d4f97d1692ca/FLAG66b8ba496 [2023-11-21 21:02:18,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/data/4bf17b2a6/72cbabd4f06141c6a4c0d4f97d1692ca [2023-11-21 21:02:18,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:18,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:18,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:18,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:18,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:18,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:18" (1/1) ... [2023-11-21 21:02:18,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4023bdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:18, skipping insertion in model container [2023-11-21 21:02:18,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:18" (1/1) ... [2023-11-21 21:02:18,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:19,035 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_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-21 21:02:19,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:19,220 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:02:19,256 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_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-21 21:02:19,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:19,324 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:19,324 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:19,332 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:02:19,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19 WrapperNode [2023-11-21 21:02:19,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:19,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:19,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:02:19,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:02:19,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,448 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-21 21:02:19,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:19,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:02:19,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:02:19,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:02:19,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,484 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,502 INFO L187 HeapSplitter]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1] [2023-11-21 21:02:19,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:02:19,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:02:19,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:02:19,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:02:19,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (1/1) ... [2023-11-21 21:02:19,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:19,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:02:19,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:02:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 21:02:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 21:02:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 21:02:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 21:02:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 21:02:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 21:02:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 21:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 21:02:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 21:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 21:02:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 21:02:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:02:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:02:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:02:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:02:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 21:02:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:02:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:02:19,656 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 21:02:19,825 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:02:19,828 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:02:20,015 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:02:20,160 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:02:20,160 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:02:20,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:20 BoogieIcfgContainer [2023-11-21 21:02:20,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:02:20,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:02:20,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:02:20,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:02:20,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:18" (1/3) ... [2023-11-21 21:02:20,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb12411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:20, skipping insertion in model container [2023-11-21 21:02:20,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:19" (2/3) ... [2023-11-21 21:02:20,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb12411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:20, skipping insertion in model container [2023-11-21 21:02:20,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:20" (3/3) ... [2023-11-21 21:02:20,172 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-21 21:02:20,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 21:02:20,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:02:20,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:02:20,193 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:02:20,239 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:02:20,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-21 21:02:20,313 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-21 21:02:20,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:02:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-21 21:02:20,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-21 21:02:20,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-21 21:02:20,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:02:20,341 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64beb88f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:02:20,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-21 21:02:20,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:02:20,364 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-21 21:02:20,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:02:20,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:20,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:20,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:20,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1296380526, now seen corresponding path program 1 times [2023-11-21 21:02:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796715322] [2023-11-21 21:02:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:21,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796715322] [2023-11-21 21:02:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796715322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:21,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:21,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:02:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475619924] [2023-11-21 21:02:21,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:21,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-21 21:02:21,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:21,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:21,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-21 21:02:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:22,024 INFO L124 PetriNetUnfolderBase]: 1589/2964 cut-off events. [2023-11-21 21:02:22,024 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-21 21:02:22,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 2964 events. 1589/2964 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21128 event pairs, 465 based on Foata normal form. 99/3015 useless extension candidates. Maximal degree in co-relation 5436. Up to 965 conditions per place. [2023-11-21 21:02:22,067 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 30 selfloop transitions, 7 changer transitions 39/89 dead transitions. [2023-11-21 21:02:22,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 89 transitions, 345 flow [2023-11-21 21:02:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:02:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:02:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-21 21:02:22,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959706959706959 [2023-11-21 21:02:22,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-21 21:02:22,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-21 21:02:22,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:22,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-21 21:02:22,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:22,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:22,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:22,136 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 7 states and 190 transitions. [2023-11-21 21:02:22,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 89 transitions, 345 flow [2023-11-21 21:02:22,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 21:02:22,145 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 158 flow [2023-11-21 21:02:22,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-21 21:02:22,150 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-11-21 21:02:22,151 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 158 flow [2023-11-21 21:02:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:22,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:22,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:02:22,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:22,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1303634287, now seen corresponding path program 1 times [2023-11-21 21:02:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:22,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734026248] [2023-11-21 21:02:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734026248] [2023-11-21 21:02:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734026248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:22,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642546737] [2023-11-21 21:02:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:22,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:22,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:22,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-21 21:02:22,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:22,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:22,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-21 21:02:22,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:23,102 INFO L124 PetriNetUnfolderBase]: 1351/2599 cut-off events. [2023-11-21 21:02:23,103 INFO L125 PetriNetUnfolderBase]: For 3332/3340 co-relation queries the response was YES. [2023-11-21 21:02:23,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2599 events. 1351/2599 cut-off events. For 3332/3340 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18368 event pairs, 206 based on Foata normal form. 82/2662 useless extension candidates. Maximal degree in co-relation 7579. Up to 774 conditions per place. [2023-11-21 21:02:23,133 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 37 selfloop transitions, 8 changer transitions 58/116 dead transitions. [2023-11-21 21:02:23,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 116 transitions, 772 flow [2023-11-21 21:02:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:02:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:02:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2023-11-21 21:02:23,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2023-11-21 21:02:23,138 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 253 transitions. [2023-11-21 21:02:23,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 253 transitions. [2023-11-21 21:02:23,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:23,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 253 transitions. [2023-11-21 21:02:23,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,150 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,151 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 158 flow. Second operand 10 states and 253 transitions. [2023-11-21 21:02:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 116 transitions, 772 flow [2023-11-21 21:02:23,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:02:23,172 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 230 flow [2023-11-21 21:02:23,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-11-21 21:02:23,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2023-11-21 21:02:23,179 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 230 flow [2023-11-21 21:02:23,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:23,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:23,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:02:23,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:23,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1687819023, now seen corresponding path program 1 times [2023-11-21 21:02:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892442339] [2023-11-21 21:02:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:23,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:23,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892442339] [2023-11-21 21:02:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892442339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:23,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:23,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384634280] [2023-11-21 21:02:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:23,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:23,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-21 21:02:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:23,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-21 21:02:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:23,934 INFO L124 PetriNetUnfolderBase]: 1199/2334 cut-off events. [2023-11-21 21:02:23,934 INFO L125 PetriNetUnfolderBase]: For 6905/6909 co-relation queries the response was YES. [2023-11-21 21:02:23,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 2334 events. 1199/2334 cut-off events. For 6905/6909 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16382 event pairs, 115 based on Foata normal form. 75/2388 useless extension candidates. Maximal degree in co-relation 7880. Up to 662 conditions per place. [2023-11-21 21:02:23,968 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 43 selfloop transitions, 12 changer transitions 52/120 dead transitions. [2023-11-21 21:02:23,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 916 flow [2023-11-21 21:02:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:02:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:02:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2023-11-21 21:02:23,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6435897435897436 [2023-11-21 21:02:23,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 251 transitions. [2023-11-21 21:02:23,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 251 transitions. [2023-11-21 21:02:23,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:23,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 251 transitions. [2023-11-21 21:02:23,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,977 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:23,977 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 230 flow. Second operand 10 states and 251 transitions. [2023-11-21 21:02:23,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 916 flow [2023-11-21 21:02:24,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 869 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-21 21:02:24,013 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 352 flow [2023-11-21 21:02:24,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-11-21 21:02:24,015 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-21 21:02:24,016 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 352 flow [2023-11-21 21:02:24,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:24,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:02:24,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:24,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1626481644, now seen corresponding path program 1 times [2023-11-21 21:02:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:24,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316139868] [2023-11-21 21:02:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:24,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316139868] [2023-11-21 21:02:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316139868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:24,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:24,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522775249] [2023-11-21 21:02:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:24,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:24,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2023-11-21 21:02:24,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:24,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2023-11-21 21:02:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:24,793 INFO L124 PetriNetUnfolderBase]: 1026/2233 cut-off events. [2023-11-21 21:02:24,794 INFO L125 PetriNetUnfolderBase]: For 7727/7914 co-relation queries the response was YES. [2023-11-21 21:02:24,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 2233 events. 1026/2233 cut-off events. For 7727/7914 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17707 event pairs, 338 based on Foata normal form. 186/2298 useless extension candidates. Maximal degree in co-relation 7278. Up to 699 conditions per place. [2023-11-21 21:02:24,825 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 23 selfloop transitions, 6 changer transitions 48/103 dead transitions. [2023-11-21 21:02:24,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 772 flow [2023-11-21 21:02:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:02:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-21 21:02:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 316 transitions. [2023-11-21 21:02:24,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232741617357002 [2023-11-21 21:02:24,828 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 316 transitions. [2023-11-21 21:02:24,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 316 transitions. [2023-11-21 21:02:24,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:24,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 316 transitions. [2023-11-21 21:02:24,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,832 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,833 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 352 flow. Second operand 13 states and 316 transitions. [2023-11-21 21:02:24,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 772 flow [2023-11-21 21:02:24,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 708 flow, removed 30 selfloop flow, removed 7 redundant places. [2023-11-21 21:02:24,859 INFO L231 Difference]: Finished difference. Result has 83 places, 49 transitions, 356 flow [2023-11-21 21:02:24,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=49} [2023-11-21 21:02:24,861 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2023-11-21 21:02:24,861 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 49 transitions, 356 flow [2023-11-21 21:02:24,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:24,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:24,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:24,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:02:24,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:24,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash 586327437, now seen corresponding path program 1 times [2023-11-21 21:02:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818794629] [2023-11-21 21:02:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:25,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818794629] [2023-11-21 21:02:25,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818794629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:25,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:25,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:02:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850240712] [2023-11-21 21:02:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:25,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:25,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2023-11-21 21:02:25,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 49 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:25,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2023-11-21 21:02:25,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:25,361 INFO L124 PetriNetUnfolderBase]: 618/1351 cut-off events. [2023-11-21 21:02:25,361 INFO L125 PetriNetUnfolderBase]: For 5703/5839 co-relation queries the response was YES. [2023-11-21 21:02:25,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 1351 events. 618/1351 cut-off events. For 5703/5839 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9276 event pairs, 221 based on Foata normal form. 53/1324 useless extension candidates. Maximal degree in co-relation 4897. Up to 735 conditions per place. [2023-11-21 21:02:25,381 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 8 changer transitions 21/82 dead transitions. [2023-11-21 21:02:25,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 82 transitions, 700 flow [2023-11-21 21:02:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:02:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:02:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2023-11-21 21:02:25,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2023-11-21 21:02:25,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 186 transitions. [2023-11-21 21:02:25,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 186 transitions. [2023-11-21 21:02:25,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:25,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 186 transitions. [2023-11-21 21:02:25,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,386 INFO L175 Difference]: Start difference. First operand has 83 places, 49 transitions, 356 flow. Second operand 7 states and 186 transitions. [2023-11-21 21:02:25,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 82 transitions, 700 flow [2023-11-21 21:02:25,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 628 flow, removed 30 selfloop flow, removed 16 redundant places. [2023-11-21 21:02:25,405 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 410 flow [2023-11-21 21:02:25,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-11-21 21:02:25,407 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-11-21 21:02:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 410 flow [2023-11-21 21:02:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:25,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:25,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:02:25,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:25,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2141437192, now seen corresponding path program 1 times [2023-11-21 21:02:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:25,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382755326] [2023-11-21 21:02:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:25,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:25,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382755326] [2023-11-21 21:02:25,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382755326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:25,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:25,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:25,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564694518] [2023-11-21 21:02:25,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:25,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:02:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:25,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:02:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:02:25,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-21 21:02:25,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:25,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:25,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-21 21:02:25,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:26,025 INFO L124 PetriNetUnfolderBase]: 990/2011 cut-off events. [2023-11-21 21:02:26,025 INFO L125 PetriNetUnfolderBase]: For 6854/6854 co-relation queries the response was YES. [2023-11-21 21:02:26,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 2011 events. 990/2011 cut-off events. For 6854/6854 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14307 event pairs, 102 based on Foata normal form. 38/2019 useless extension candidates. Maximal degree in co-relation 7274. Up to 726 conditions per place. [2023-11-21 21:02:26,045 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 40 selfloop transitions, 9 changer transitions 39/101 dead transitions. [2023-11-21 21:02:26,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 928 flow [2023-11-21 21:02:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:02:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:02:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2023-11-21 21:02:26,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-21 21:02:26,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 175 transitions. [2023-11-21 21:02:26,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 175 transitions. [2023-11-21 21:02:26,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:26,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 175 transitions. [2023-11-21 21:02:26,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,052 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 410 flow. Second operand 7 states and 175 transitions. [2023-11-21 21:02:26,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 928 flow [2023-11-21 21:02:26,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 901 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-21 21:02:26,076 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 310 flow [2023-11-21 21:02:26,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2023-11-21 21:02:26,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-11-21 21:02:26,080 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 310 flow [2023-11-21 21:02:26,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:26,080 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] [2023-11-21 21:02:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:02:26,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:26,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1931990120, now seen corresponding path program 1 times [2023-11-21 21:02:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180965517] [2023-11-21 21:02:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180965517] [2023-11-21 21:02:26,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180965517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:26,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:02:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031046379] [2023-11-21 21:02:26,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:02:26,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-21 21:02:26,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:26,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-21 21:02:26,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:26,449 INFO L124 PetriNetUnfolderBase]: 599/1255 cut-off events. [2023-11-21 21:02:26,449 INFO L125 PetriNetUnfolderBase]: For 2720/2782 co-relation queries the response was YES. [2023-11-21 21:02:26,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 1255 events. 599/1255 cut-off events. For 2720/2782 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8039 event pairs, 143 based on Foata normal form. 66/1251 useless extension candidates. Maximal degree in co-relation 3343. Up to 477 conditions per place. [2023-11-21 21:02:26,464 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-21 21:02:26,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 406 flow [2023-11-21 21:02:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:02:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 21:02:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-21 21:02:26,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 21:02:26,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-21 21:02:26,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-21 21:02:26,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:26,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-21 21:02:26,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,468 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 310 flow. Second operand 4 states and 117 transitions. [2023-11-21 21:02:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 406 flow [2023-11-21 21:02:26,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 365 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-21 21:02:26,478 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 307 flow [2023-11-21 21:02:26,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2023-11-21 21:02:26,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-11-21 21:02:26,480 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 307 flow [2023-11-21 21:02:26,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:26,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:02:26,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:26,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash -893838581, now seen corresponding path program 1 times [2023-11-21 21:02:26,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:26,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147698296] [2023-11-21 21:02:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147698296] [2023-11-21 21:02:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147698296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:02:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405359301] [2023-11-21 21:02:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-21 21:02:26,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-21 21:02:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:26,792 INFO L124 PetriNetUnfolderBase]: 460/957 cut-off events. [2023-11-21 21:02:26,793 INFO L125 PetriNetUnfolderBase]: For 1022/1293 co-relation queries the response was YES. [2023-11-21 21:02:26,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 957 events. 460/957 cut-off events. For 1022/1293 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5545 event pairs, 41 based on Foata normal form. 71/972 useless extension candidates. Maximal degree in co-relation 2625. Up to 404 conditions per place. [2023-11-21 21:02:26,804 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 29 selfloop transitions, 8 changer transitions 4/69 dead transitions. [2023-11-21 21:02:26,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 452 flow [2023-11-21 21:02:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:02:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 21:02:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-21 21:02:26,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2023-11-21 21:02:26,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-21 21:02:26,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-21 21:02:26,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:26,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-21 21:02:26,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,808 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 307 flow. Second operand 5 states and 148 transitions. [2023-11-21 21:02:26,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 452 flow [2023-11-21 21:02:26,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 437 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-21 21:02:26,814 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 341 flow [2023-11-21 21:02:26,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2023-11-21 21:02:26,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-21 21:02:26,816 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 341 flow [2023-11-21 21:02:26,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:02:26,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 21:02:26,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 21:02:26,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -330710423, now seen corresponding path program 1 times [2023-11-21 21:02:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:26,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321309212] [2023-11-21 21:02:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:26,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321309212] [2023-11-21 21:02:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321309212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:26,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154482825] [2023-11-21 21:02:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:26,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:26,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-21 21:02:26,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:26,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:02:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-21 21:02:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:02:27,163 INFO L124 PetriNetUnfolderBase]: 352/709 cut-off events. [2023-11-21 21:02:27,163 INFO L125 PetriNetUnfolderBase]: For 1346/1827 co-relation queries the response was YES. [2023-11-21 21:02:27,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 709 events. 352/709 cut-off events. For 1346/1827 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3918 event pairs, 23 based on Foata normal form. 59/716 useless extension candidates. Maximal degree in co-relation 2282. Up to 356 conditions per place. [2023-11-21 21:02:27,169 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-11-21 21:02:27,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 454 flow [2023-11-21 21:02:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:02:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:02:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2023-11-21 21:02:27,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-21 21:02:27,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 169 transitions. [2023-11-21 21:02:27,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 169 transitions. [2023-11-21 21:02:27,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:02:27,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 169 transitions. [2023-11-21 21:02:27,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:27,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:27,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:27,173 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 341 flow. Second operand 6 states and 169 transitions. [2023-11-21 21:02:27,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 454 flow [2023-11-21 21:02:27,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 426 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-21 21:02:27,179 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-11-21 21:02:27,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-11-21 21:02:27,180 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-11-21 21:02:27,180 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-11-21 21:02:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:27,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-21 21:02:27,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-21 21:02:27,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-21 21:02:27,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-21 21:02:27,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:02:27,185 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:27,188 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 21:02:27,189 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:02:27,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:02:27 BasicIcfg [2023-11-21 21:02:27,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:02:27,195 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:02:27,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:02:27,196 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:02:27,196 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:20" (3/4) ... [2023-11-21 21:02:27,199 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 21:02:27,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-21 21:02:27,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-21 21:02:27,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-21 21:02:27,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-21 21:02:27,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-21 21:02:27,208 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 21:02:27,209 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 21:02:27,297 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:02:27,298 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 21:02:27,298 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:02:27,298 INFO L158 Benchmark]: Toolchain (without parser) took 8506.54ms. Allocated memory was 125.8MB in the beginning and 222.3MB in the end (delta: 96.5MB). Free memory was 78.4MB in the beginning and 137.0MB in the end (delta: -58.6MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,299 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:02:27,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.64ms. Allocated memory is still 125.8MB. Free memory was 78.0MB in the beginning and 57.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.81ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 57.3MB in the beginning and 147.0MB in the end (delta: -89.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,300 INFO L158 Benchmark]: Boogie Preprocessor took 109.58ms. Allocated memory is still 178.3MB. Free memory was 147.0MB in the beginning and 146.6MB in the end (delta: 406.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,300 INFO L158 Benchmark]: RCFGBuilder took 602.25ms. Allocated memory is still 178.3MB. Free memory was 146.6MB in the beginning and 124.5MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,301 INFO L158 Benchmark]: TraceAbstraction took 7029.88ms. Allocated memory was 178.3MB in the beginning and 222.3MB in the end (delta: 44.0MB). Free memory was 123.5MB in the beginning and 142.2MB in the end (delta: -18.7MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,301 INFO L158 Benchmark]: Witness Printer took 102.46ms. Allocated memory is still 222.3MB. Free memory was 142.2MB in the beginning and 137.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 21:02:27,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.64ms. Allocated memory is still 125.8MB. Free memory was 78.0MB in the beginning and 57.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.81ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 57.3MB in the beginning and 147.0MB in the end (delta: -89.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.58ms. Allocated memory is still 178.3MB. Free memory was 147.0MB in the beginning and 146.6MB in the end (delta: 406.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 602.25ms. Allocated memory is still 178.3MB. Free memory was 146.6MB in the beginning and 124.5MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7029.88ms. Allocated memory was 178.3MB in the beginning and 222.3MB in the end (delta: 44.0MB). Free memory was 123.5MB in the beginning and 142.2MB in the end (delta: -18.7MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Witness Printer took 102.46ms. Allocated memory is still 222.3MB. Free memory was 142.2MB in the beginning and 137.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 64 locations, 4 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: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 439 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 400 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 813 IncrementalHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 81 mSDtfsCounter, 813 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=5, InterpolantAutomatonStates: 69, 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, 1.9s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-11-21 21:02:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529c1ec5-6ac3-4148-9a32-5fdd14b09c4f/bin/uautomizer-verify-bycVGegfSx/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