./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1 --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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:29:31,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:29:31,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:29:31,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:29:31,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:29:31,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:29:31,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:29:31,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:29:31,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:29:31,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:29:31,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:29:31,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:29:31,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:29:31,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:29:31,393 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:29:31,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:29:31,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:29:31,395 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:29:31,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:29:31,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:29:31,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:29:31,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:29:31,397 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-12-02 08:29:31,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:29:31,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:29:31,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:29:31,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:29:31,637 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:29:31,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-12-02 08:29:34,395 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/data/be0157710/41cd895b957c4677874539068e167170/FLAG1cdfd2884 [2024-12-02 08:29:34,575 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:29:34,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-12-02 08:29:34,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/data/be0157710/41cd895b957c4677874539068e167170/FLAG1cdfd2884 [2024-12-02 08:29:34,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/data/be0157710/41cd895b957c4677874539068e167170 [2024-12-02 08:29:34,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:29:34,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:29:34,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:29:34,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:29:34,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:29:34,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:34" (1/1) ... [2024-12-02 08:29:34,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6024ec39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:34, skipping insertion in model container [2024-12-02 08:29:34,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:34" (1/1) ... [2024-12-02 08:29:34,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:29:35,121 WARN L250 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_96571493-7f2a-4ce3-9529-4283505b6edc/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-12-02 08:29:35,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:29:35,140 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:29:35,162 WARN L250 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_96571493-7f2a-4ce3-9529-4283505b6edc/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-12-02 08:29:35,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:29:35,181 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:29:35,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35 WrapperNode [2024-12-02 08:29:35,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:29:35,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:29:35,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:29:35,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:29:35,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,219 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 247 [2024-12-02 08:29:35,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:29:35,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:29:35,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:29:35,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:29:35,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,249 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 08:29:35,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,258 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:29:35,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:29:35,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:29:35,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:29:35,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (1/1) ... [2024-12-02 08:29:35,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:29:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:35,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:29:35,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:29:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 08:29:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 08:29:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 08:29:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 08:29:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 08:29:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:29:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:29:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:29:35,332 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:29:35,431 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:29:35,432 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:29:35,773 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:29:35,773 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:29:36,053 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:29:36,053 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 08:29:36,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:36 BoogieIcfgContainer [2024-12-02 08:29:36,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:29:36,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:29:36,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:29:36,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:29:36,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:29:34" (1/3) ... [2024-12-02 08:29:36,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d560b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:36, skipping insertion in model container [2024-12-02 08:29:36,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:35" (2/3) ... [2024-12-02 08:29:36,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d560b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:36, skipping insertion in model container [2024-12-02 08:29:36,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:36" (3/3) ... [2024-12-02 08:29:36,062 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-12-02 08:29:36,079 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:29:36,080 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-equiv.wvr.c that has 5 procedures, 48 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-02 08:29:36,080 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:29:36,147 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-12-02 08:29:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2024-12-02 08:29:36,221 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-12-02 08:29:36,223 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 08:29:36,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-12-02 08:29:36,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2024-12-02 08:29:36,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2024-12-02 08:29:36,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:29:36,251 INFO L333 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, 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;@672e4aa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:29:36,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:29:36,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:29:36,269 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-12-02 08:29:36,269 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 08:29:36,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:36,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:36,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:36,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1881340036, now seen corresponding path program 1 times [2024-12-02 08:29:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402575632] [2024-12-02 08:29:36,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:36,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402575632] [2024-12-02 08:29:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402575632] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:29:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:29:36,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:29:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264265047] [2024-12-02 08:29:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:36,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:29:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:36,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:29:36,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:29:36,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:36,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2024-12-02 08:29:36,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:36,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:36,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:37,731 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2024-12-02 08:29:37,731 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-12-02 08:29:37,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22845 conditions, 10948 events. 8088/10948 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 51561 event pairs, 6978 based on Foata normal form. 0/9822 useless extension candidates. Maximal degree in co-relation 22783. Up to 10923 conditions per place. [2024-12-02 08:29:37,785 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-12-02 08:29:37,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2024-12-02 08:29:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:29:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:29:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-12-02 08:29:37,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2024-12-02 08:29:37,797 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2024-12-02 08:29:37,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2024-12-02 08:29:37,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 08:29:37,810 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2024-12-02 08:29:37,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-12-02 08:29:37,815 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-12-02 08:29:37,815 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2024-12-02 08:29:37,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2024-12-02 08:29:37,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:37,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:37,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:29:37,816 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:37,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 99315689, now seen corresponding path program 1 times [2024-12-02 08:29:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852894067] [2024-12-02 08:29:37,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852894067] [2024-12-02 08:29:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852894067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:29:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:29:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:29:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513291479] [2024-12-02 08:29:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:38,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:29:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:38,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:29:38,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:29:38,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:38,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-12-02 08:29:38,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:38,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:38,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:39,686 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2024-12-02 08:29:39,686 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-12-02 08:29:39,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 26141 events. 19350/26141 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 142471 event pairs, 6122 based on Foata normal form. 1/23233 useless extension candidates. Maximal degree in co-relation 52851. Up to 11645 conditions per place. [2024-12-02 08:29:39,787 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2024-12-02 08:29:39,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2024-12-02 08:29:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:29:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:29:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-12-02 08:29:39,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2024-12-02 08:29:39,789 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2024-12-02 08:29:39,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2024-12-02 08:29:39,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:29:39,793 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2024-12-02 08:29:39,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2024-12-02 08:29:39,794 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-12-02 08:29:39,794 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2024-12-02 08:29:39,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-12-02 08:29:39,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:39,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:39,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:29:39,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:39,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 58253189, now seen corresponding path program 2 times [2024-12-02 08:29:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040620776] [2024-12-02 08:29:39,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:29:39,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:39,829 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:29:39,829 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:29:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040620776] [2024-12-02 08:29:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040620776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:29:39,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:29:39,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:29:39,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637881212] [2024-12-02 08:29:39,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:39,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:29:39,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:39,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:29:39,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:29:39,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:39,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-12-02 08:29:39,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:39,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:39,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:42,223 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2024-12-02 08:29:42,223 INFO L125 PetriNetUnfolderBase]: For 4086/4086 co-relation queries the response was YES. [2024-12-02 08:29:42,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89848 conditions, 41318 events. 30683/41318 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 230744 event pairs, 14006 based on Foata normal form. 1/36749 useless extension candidates. Maximal degree in co-relation 89842. Up to 19516 conditions per place. [2024-12-02 08:29:42,474 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2024-12-02 08:29:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2024-12-02 08:29:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:29:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:29:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-12-02 08:29:42,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-12-02 08:29:42,477 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2024-12-02 08:29:42,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2024-12-02 08:29:42,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:29:42,483 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2024-12-02 08:29:42,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-12-02 08:29:42,484 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-12-02 08:29:42,484 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2024-12-02 08:29:42,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-12-02 08:29:42,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:42,484 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:42,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:29:42,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:42,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1409836773, now seen corresponding path program 1 times [2024-12-02 08:29:42,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:42,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260414642] [2024-12-02 08:29:42,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:42,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260414642] [2024-12-02 08:29:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260414642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:29:42,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:29:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:29:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543934294] [2024-12-02 08:29:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:42,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:29:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:42,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:29:42,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:29:42,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:42,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-12-02 08:29:42,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:42,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:42,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:45,530 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2024-12-02 08:29:45,530 INFO L125 PetriNetUnfolderBase]: For 16753/16759 co-relation queries the response was YES. [2024-12-02 08:29:45,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128512 conditions, 57206 events. 42068/57206 cut-off events. For 16753/16759 co-relation queries the response was YES. Maximal size of possible extension queue 1615. Compared 336962 event pairs, 32096 based on Foata normal form. 1244/51658 useless extension candidates. Maximal degree in co-relation 128503. Up to 41253 conditions per place. [2024-12-02 08:29:45,707 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2024-12-02 08:29:45,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2024-12-02 08:29:45,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:29:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:29:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-12-02 08:29:45,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2024-12-02 08:29:45,709 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2024-12-02 08:29:45,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2024-12-02 08:29:45,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-12-02 08:29:45,730 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2024-12-02 08:29:45,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-12-02 08:29:45,730 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-12-02 08:29:45,730 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2024-12-02 08:29:45,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-12-02 08:29:45,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:45,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:45,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:29:45,731 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:45,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2046778396, now seen corresponding path program 1 times [2024-12-02 08:29:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580260042] [2024-12-02 08:29:45,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:45,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580260042] [2024-12-02 08:29:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580260042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:29:45,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:29:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:29:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110692780] [2024-12-02 08:29:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:45,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:29:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:45,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:29:45,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:29:45,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:45,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-12-02 08:29:45,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:45,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:45,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:48,828 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2024-12-02 08:29:48,829 INFO L125 PetriNetUnfolderBase]: For 15437/15437 co-relation queries the response was YES. [2024-12-02 08:29:48,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115709 conditions, 50532 events. 37183/50532 cut-off events. For 15437/15437 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 290938 event pairs, 28958 based on Foata normal form. 382/45014 useless extension candidates. Maximal degree in co-relation 115696. Up to 41253 conditions per place. [2024-12-02 08:29:49,017 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2024-12-02 08:29:49,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2024-12-02 08:29:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:29:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:29:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-12-02 08:29:49,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2024-12-02 08:29:49,019 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2024-12-02 08:29:49,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2024-12-02 08:29:49,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 08:29:49,036 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2024-12-02 08:29:49,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-12-02 08:29:49,037 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-12-02 08:29:49,038 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2024-12-02 08:29:49,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-12-02 08:29:49,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:49,038 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:49,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:29:49,038 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:49,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1140204843, now seen corresponding path program 1 times [2024-12-02 08:29:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799562709] [2024-12-02 08:29:49,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799562709] [2024-12-02 08:29:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799562709] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533083786] [2024-12-02 08:29:49,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:49,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:49,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:49,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:29:49,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:29:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:49,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:29:49,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:49,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:49,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533083786] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:29:49,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:29:49,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 08:29:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142621079] [2024-12-02 08:29:49,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:29:49,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:29:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:49,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:29:49,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:29:49,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:49,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-12-02 08:29:49,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:53,005 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2024-12-02 08:29:53,005 INFO L125 PetriNetUnfolderBase]: For 28449/28449 co-relation queries the response was YES. [2024-12-02 08:29:53,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149702 conditions, 63464 events. 46892/63464 cut-off events. For 28449/28449 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 382687 event pairs, 24105 based on Foata normal form. 799/57077 useless extension candidates. Maximal degree in co-relation 149687. Up to 30623 conditions per place. [2024-12-02 08:29:53,222 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2024-12-02 08:29:53,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2024-12-02 08:29:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:29:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:29:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-12-02 08:29:53,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-12-02 08:29:53,223 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2024-12-02 08:29:53,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2024-12-02 08:29:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-12-02 08:29:53,332 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2024-12-02 08:29:53,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-12-02 08:29:53,333 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-12-02 08:29:53,333 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2024-12-02 08:29:53,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-12-02 08:29:53,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:53,333 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:53,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:29:53,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 08:29:53,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:53,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1285877437, now seen corresponding path program 1 times [2024-12-02 08:29:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038171097] [2024-12-02 08:29:53,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:53,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:53,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038171097] [2024-12-02 08:29:53,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038171097] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:53,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868777650] [2024-12-02 08:29:53,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:53,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:53,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:53,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:29:53,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:29:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:53,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:29:53,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:53,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:53,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868777650] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:29:53,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:29:53,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 08:29:53,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575916026] [2024-12-02 08:29:53,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:29:53,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:29:53,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:53,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:29:53,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:29:53,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:53,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-12-02 08:29:53,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:56,880 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2024-12-02 08:29:56,880 INFO L125 PetriNetUnfolderBase]: For 23274/23280 co-relation queries the response was YES. [2024-12-02 08:29:56,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118928 conditions, 49836 events. 36481/49836 cut-off events. For 23274/23280 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 290409 event pairs, 17518 based on Foata normal form. 1460/45366 useless extension candidates. Maximal degree in co-relation 118913. Up to 21141 conditions per place. [2024-12-02 08:29:57,038 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2024-12-02 08:29:57,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2024-12-02 08:29:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:29:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:29:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-12-02 08:29:57,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-12-02 08:29:57,039 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2024-12-02 08:29:57,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2024-12-02 08:29:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-12-02 08:29:57,054 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2024-12-02 08:29:57,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-12-02 08:29:57,055 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-12-02 08:29:57,055 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2024-12-02 08:29:57,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-12-02 08:29:57,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:57,056 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:57,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:29:57,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:57,256 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:57,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash 588404904, now seen corresponding path program 2 times [2024-12-02 08:29:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:57,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168408270] [2024-12-02 08:29:57,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:29:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:57,302 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:29:57,302 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:29:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:29:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:29:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168408270] [2024-12-02 08:29:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168408270] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59683981] [2024-12-02 08:29:57,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:29:57,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:57,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:57,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:29:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:29:57,540 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:29:57,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:29:57,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:29:57,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:29:57,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:29:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59683981] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:57,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:29:57,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-12-02 08:29:57,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766774564] [2024-12-02 08:29:57,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:29:57,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:29:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:29:57,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:29:57,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:29:57,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:29:57,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-12-02 08:29:57,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:29:57,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:29:57,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:29:59,417 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2024-12-02 08:29:59,418 INFO L125 PetriNetUnfolderBase]: For 25332/25338 co-relation queries the response was YES. [2024-12-02 08:29:59,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84389 conditions, 31570 events. 23295/31570 cut-off events. For 25332/25338 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 171219 event pairs, 11465 based on Foata normal form. 830/28805 useless extension candidates. Maximal degree in co-relation 84370. Up to 24878 conditions per place. [2024-12-02 08:29:59,560 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 76 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-12-02 08:29:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 534 flow [2024-12-02 08:29:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:29:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:29:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-12-02 08:29:59,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3224043715846995 [2024-12-02 08:29:59,561 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 6 states and 118 transitions. [2024-12-02 08:29:59,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 534 flow [2024-12-02 08:29:59,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-12-02 08:29:59,696 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 280 flow [2024-12-02 08:29:59,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-12-02 08:29:59,696 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-12-02 08:29:59,697 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 280 flow [2024-12-02 08:29:59,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-12-02 08:29:59,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:29:59,697 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:59,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:29:59,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:59,897 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:29:59,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1466774009, now seen corresponding path program 1 times [2024-12-02 08:29:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:29:59,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004014343] [2024-12-02 08:29:59,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:29:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:00,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004014343] [2024-12-02 08:30:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004014343] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976599098] [2024-12-02 08:30:00,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:00,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:00,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:30:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:00,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:30:00,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:00,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976599098] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:00,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:30:00,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-12-02 08:30:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095567751] [2024-12-02 08:30:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:30:00,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:30:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:00,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:30:00,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:30:00,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:30:00,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-12-02 08:30:00,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:30:00,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:30:00,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:30:01,593 INFO L124 PetriNetUnfolderBase]: 19893/26924 cut-off events. [2024-12-02 08:30:01,593 INFO L125 PetriNetUnfolderBase]: For 18006/18006 co-relation queries the response was YES. [2024-12-02 08:30:01,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69920 conditions, 26924 events. 19893/26924 cut-off events. For 18006/18006 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 141717 event pairs, 11581 based on Foata normal form. 589/24346 useless extension candidates. Maximal degree in co-relation 69905. Up to 17846 conditions per place. [2024-12-02 08:30:01,716 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 94 selfloop transitions, 6 changer transitions 1/105 dead transitions. [2024-12-02 08:30:01,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 637 flow [2024-12-02 08:30:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:30:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:30:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-12-02 08:30:01,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2024-12-02 08:30:01,718 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 280 flow. Second operand 6 states and 127 transitions. [2024-12-02 08:30:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 637 flow [2024-12-02 08:30:01,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 614 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-02 08:30:01,737 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 285 flow [2024-12-02 08:30:01,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-12-02 08:30:01,738 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-12-02 08:30:01,738 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 285 flow [2024-12-02 08:30:01,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-12-02 08:30:01,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:30:01,739 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:01,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:30:01,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:01,939 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:30:01,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -718536190, now seen corresponding path program 1 times [2024-12-02 08:30:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:30:01,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790552790] [2024-12-02 08:30:01,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:30:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790552790] [2024-12-02 08:30:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790552790] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457937069] [2024-12-02 08:30:02,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:02,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:30:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:02,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:30:02,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:02,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 08:30:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:30:02,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:30:02,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457937069] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:30:02,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:30:02,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2024-12-02 08:30:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769031355] [2024-12-02 08:30:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:30:02,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:30:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:02,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:30:02,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:30:02,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:30:02,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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) [2024-12-02 08:30:02,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:30:02,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:30:02,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:30:05,903 INFO L124 PetriNetUnfolderBase]: 38600/52225 cut-off events. [2024-12-02 08:30:05,903 INFO L125 PetriNetUnfolderBase]: For 35925/35931 co-relation queries the response was YES. [2024-12-02 08:30:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135717 conditions, 52225 events. 38600/52225 cut-off events. For 35925/35931 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 297191 event pairs, 8521 based on Foata normal form. 3/45937 useless extension candidates. Maximal degree in co-relation 135701. Up to 20799 conditions per place. [2024-12-02 08:30:06,102 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 258 selfloop transitions, 31 changer transitions 5/298 dead transitions. [2024-12-02 08:30:06,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 298 transitions, 1669 flow [2024-12-02 08:30:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:30:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 08:30:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 351 transitions. [2024-12-02 08:30:06,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230998509687034 [2024-12-02 08:30:06,104 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 285 flow. Second operand 11 states and 351 transitions. [2024-12-02 08:30:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 298 transitions, 1669 flow [2024-12-02 08:30:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 298 transitions, 1650 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 08:30:06,142 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 559 flow [2024-12-02 08:30:06,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2024-12-02 08:30:06,142 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-12-02 08:30:06,143 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 559 flow [2024-12-02 08:30:06,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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) [2024-12-02 08:30:06,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:30:06,143 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:06,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:30:06,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 08:30:06,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:30:06,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1329070400, now seen corresponding path program 2 times [2024-12-02 08:30:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:30:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298866585] [2024-12-02 08:30:06,344 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:30:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:30:06,370 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:30:06,370 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:30:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:07,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298866585] [2024-12-02 08:30:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298866585] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851827402] [2024-12-02 08:30:07,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:30:07,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:07,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:07,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:30:07,158 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:30:07,158 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:30:07,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 08:30:07,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:07,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 08:30:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:30:07,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:07,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:07,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-12-02 08:30:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:30:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851827402] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:30:07,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:30:07,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 21 [2024-12-02 08:30:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790293531] [2024-12-02 08:30:07,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:30:07,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 08:30:07,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:07,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 08:30:07,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-12-02 08:30:07,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:30:07,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 559 flow. Second operand has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 21 states have internal predecessors, (258), 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) [2024-12-02 08:30:07,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:30:07,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:30:07,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:30:14,713 INFO L124 PetriNetUnfolderBase]: 59810/80778 cut-off events. [2024-12-02 08:30:14,713 INFO L125 PetriNetUnfolderBase]: For 77664/77664 co-relation queries the response was YES. [2024-12-02 08:30:14,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222929 conditions, 80778 events. 59810/80778 cut-off events. For 77664/77664 co-relation queries the response was YES. Maximal size of possible extension queue 1711. Compared 485537 event pairs, 16609 based on Foata normal form. 1/71185 useless extension candidates. Maximal degree in co-relation 222908. Up to 24504 conditions per place. [2024-12-02 08:30:15,058 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 446 selfloop transitions, 63 changer transitions 11/524 dead transitions. [2024-12-02 08:30:15,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 524 transitions, 3309 flow [2024-12-02 08:30:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 08:30:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 08:30:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 598 transitions. [2024-12-02 08:30:15,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4456035767511177 [2024-12-02 08:30:15,060 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 559 flow. Second operand 22 states and 598 transitions. [2024-12-02 08:30:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 524 transitions, 3309 flow [2024-12-02 08:30:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 524 transitions, 3219 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-12-02 08:30:15,377 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 1026 flow [2024-12-02 08:30:15,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1026, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-12-02 08:30:15,377 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-12-02 08:30:15,377 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 1026 flow [2024-12-02 08:30:15,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 21 states have internal predecessors, (258), 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) [2024-12-02 08:30:15,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:30:15,378 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:15,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:30:15,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 08:30:15,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:30:15,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -221109012, now seen corresponding path program 1 times [2024-12-02 08:30:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:30:15,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117401130] [2024-12-02 08:30:15,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:30:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117401130] [2024-12-02 08:30:15,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117401130] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119942532] [2024-12-02 08:30:15,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:15,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:15,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:15,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:30:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:16,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:30:16,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:16,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 08:30:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:30:16,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:16,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:16,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-12-02 08:30:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:30:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119942532] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:30:16,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:30:16,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 15 [2024-12-02 08:30:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511523514] [2024-12-02 08:30:16,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:30:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:30:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:16,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:30:16,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:30:16,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:30:16,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 1026 flow. Second operand has 15 states, 15 states have (on average 11.933333333333334) internal successors, (179), 15 states have internal predecessors, (179), 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) [2024-12-02 08:30:16,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:30:16,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:30:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:30:25,910 INFO L124 PetriNetUnfolderBase]: 80896/109178 cut-off events. [2024-12-02 08:30:25,910 INFO L125 PetriNetUnfolderBase]: For 150680/150696 co-relation queries the response was YES. [2024-12-02 08:30:26,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318324 conditions, 109178 events. 80896/109178 cut-off events. For 150680/150696 co-relation queries the response was YES. Maximal size of possible extension queue 2330. Compared 670345 event pairs, 29790 based on Foata normal form. 5/95945 useless extension candidates. Maximal degree in co-relation 318293. Up to 69152 conditions per place. [2024-12-02 08:30:26,441 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 392 selfloop transitions, 71 changer transitions 7/474 dead transitions. [2024-12-02 08:30:26,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 474 transitions, 3351 flow [2024-12-02 08:30:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 08:30:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-12-02 08:30:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 516 transitions. [2024-12-02 08:30:26,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4452113891285591 [2024-12-02 08:30:26,443 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 1026 flow. Second operand 19 states and 516 transitions. [2024-12-02 08:30:26,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 474 transitions, 3351 flow [2024-12-02 08:30:27,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 474 transitions, 3059 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-12-02 08:30:27,179 INFO L231 Difference]: Finished difference. Result has 132 places, 173 transitions, 1398 flow [2024-12-02 08:30:27,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1398, PETRI_PLACES=132, PETRI_TRANSITIONS=173} [2024-12-02 08:30:27,180 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-12-02 08:30:27,180 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 173 transitions, 1398 flow [2024-12-02 08:30:27,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.933333333333334) internal successors, (179), 15 states have internal predecessors, (179), 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) [2024-12-02 08:30:27,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:30:27,180 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:27,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:30:27,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 08:30:27,381 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:30:27,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1064491472, now seen corresponding path program 3 times [2024-12-02 08:30:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:30:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719118692] [2024-12-02 08:30:27,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:30:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:30:27,404 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:30:27,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:30:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:28,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719118692] [2024-12-02 08:30:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719118692] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016058217] [2024-12-02 08:30:28,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:30:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:28,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:28,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:30:28,124 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:30:28,124 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:30:28,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:30:28,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:28,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:30:28,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:28,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-12-02 08:30:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:28,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:30:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016058217] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:30:28,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:30:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 24 [2024-12-02 08:30:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578049703] [2024-12-02 08:30:28,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:30:28,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 08:30:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:28,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 08:30:28,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-12-02 08:30:28,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:30:28,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 173 transitions, 1398 flow. Second operand has 24 states, 24 states have (on average 11.541666666666666) internal successors, (277), 24 states have internal predecessors, (277), 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) [2024-12-02 08:30:28,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:30:28,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:30:28,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:30:33,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:37,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:42,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:44,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:49,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:53,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:30:57,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:02,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:06,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:11,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:13,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:18,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:22,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:26,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:30,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:34,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:39,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:44,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:48,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:52,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:31:56,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:01,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:05,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:09,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:13,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:19,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:23,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:27,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:32,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:36,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:40,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:44,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:32:53,309 INFO L124 PetriNetUnfolderBase]: 117319/158710 cut-off events. [2024-12-02 08:32:53,309 INFO L125 PetriNetUnfolderBase]: For 257934/257942 co-relation queries the response was YES. [2024-12-02 08:32:53,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471788 conditions, 158710 events. 117319/158710 cut-off events. For 257934/257942 co-relation queries the response was YES. Maximal size of possible extension queue 3599. Compared 1024901 event pairs, 41729 based on Foata normal form. 6/139348 useless extension candidates. Maximal degree in co-relation 471752. Up to 97277 conditions per place. [2024-12-02 08:32:54,198 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 819 selfloop transitions, 254 changer transitions 64/1141 dead transitions. [2024-12-02 08:32:54,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1141 transitions, 7861 flow [2024-12-02 08:32:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 08:32:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-12-02 08:32:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1457 transitions. [2024-12-02 08:32:54,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3980874316939891 [2024-12-02 08:32:54,202 INFO L175 Difference]: Start difference. First operand has 132 places, 173 transitions, 1398 flow. Second operand 60 states and 1457 transitions. [2024-12-02 08:32:54,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 1141 transitions, 7861 flow [2024-12-02 08:32:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1141 transitions, 7622 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-12-02 08:32:56,830 INFO L231 Difference]: Finished difference. Result has 210 places, 395 transitions, 4142 flow [2024-12-02 08:32:56,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=4142, PETRI_PLACES=210, PETRI_TRANSITIONS=395} [2024-12-02 08:32:56,830 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2024-12-02 08:32:56,830 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 395 transitions, 4142 flow [2024-12-02 08:32:56,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.541666666666666) internal successors, (277), 24 states have internal predecessors, (277), 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) [2024-12-02 08:32:56,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:32:56,831 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:32:56,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 08:32:57,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 08:32:57,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:32:57,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:32:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 59533594, now seen corresponding path program 2 times [2024-12-02 08:32:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:32:57,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043971030] [2024-12-02 08:32:57,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:32:57,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:32:57,047 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:32:57,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:32:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:57,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:32:57,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043971030] [2024-12-02 08:32:57,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043971030] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:32:57,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981338485] [2024-12-02 08:32:57,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:32:57,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:32:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:32:57,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:32:57,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:32:57,629 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:32:57,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:32:57,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:32:57,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:32:57,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:32:57,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:32:57,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-12-02 08:32:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:57,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:32:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:32:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981338485] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:32:58,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:32:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 24 [2024-12-02 08:32:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311576537] [2024-12-02 08:32:58,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:32:58,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 08:32:58,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:32:58,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 08:32:58,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-12-02 08:32:58,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:32:58,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 395 transitions, 4142 flow. Second operand has 24 states, 24 states have (on average 11.375) internal successors, (273), 24 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) [2024-12-02 08:32:58,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:32:58,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:32:58,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:33:03,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:07,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:12,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:14,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:18,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:22,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:26,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:31,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:36,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:40,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:44,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:49,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:53,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:33:58,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:02,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:06,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:10,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:14,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:18,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:23,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:27,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:32,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:36,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:43,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:47,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:51,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:55,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:34:59,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:03,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:09,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:13,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:17,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:21,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 08:35:38,383 INFO L124 PetriNetUnfolderBase]: 151957/205679 cut-off events. [2024-12-02 08:35:38,383 INFO L125 PetriNetUnfolderBase]: For 1579638/1579646 co-relation queries the response was YES. [2024-12-02 08:35:39,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768797 conditions, 205679 events. 151957/205679 cut-off events. For 1579638/1579646 co-relation queries the response was YES. Maximal size of possible extension queue 4889. Compared 1373070 event pairs, 60009 based on Foata normal form. 6/180411 useless extension candidates. Maximal degree in co-relation 768735. Up to 146611 conditions per place. [2024-12-02 08:35:40,242 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 955 selfloop transitions, 293 changer transitions 62/1314 dead transitions. [2024-12-02 08:35:40,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1314 transitions, 12433 flow [2024-12-02 08:35:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 08:35:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-12-02 08:35:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1427 transitions. [2024-12-02 08:35:40,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3834990593926364 [2024-12-02 08:35:40,245 INFO L175 Difference]: Start difference. First operand has 210 places, 395 transitions, 4142 flow. Second operand 61 states and 1427 transitions. [2024-12-02 08:35:40,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 1314 transitions, 12433 flow [2024-12-02 08:36:17,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1314 transitions, 11570 flow, removed 417 selfloop flow, removed 6 redundant places. [2024-12-02 08:36:17,601 INFO L231 Difference]: Finished difference. Result has 287 places, 602 transitions, 6763 flow [2024-12-02 08:36:17,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=3361, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=6763, PETRI_PLACES=287, PETRI_TRANSITIONS=602} [2024-12-02 08:36:17,602 INFO L279 CegarLoopForPetriNet]: 55 programPoint places, 232 predicate places. [2024-12-02 08:36:17,602 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 602 transitions, 6763 flow [2024-12-02 08:36:17,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.375) internal successors, (273), 24 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) [2024-12-02 08:36:17,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:17,602 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:36:17,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 08:36:17,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 08:36:17,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 08:36:17,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -394709166, now seen corresponding path program 4 times [2024-12-02 08:36:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:17,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854290249] [2024-12-02 08:36:17,803 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:36:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:17,820 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:36:17,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:36:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:36:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854290249] [2024-12-02 08:36:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854290249] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:36:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733791115] [2024-12-02 08:36:18,085 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:36:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:36:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:36:18,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:36:18,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96571493-7f2a-4ce3-9529-4283505b6edc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:36:18,186 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:36:18,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:36:18,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:36:18,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:36:18,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 08:36:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:36:18,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:36:18,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:36:18,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-12-02 08:36:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:36:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733791115] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:36:18,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:36:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-12-02 08:36:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515665248] [2024-12-02 08:36:18,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:36:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:36:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:18,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:36:18,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:36:18,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-12-02 08:36:18,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 602 transitions, 6763 flow. Second operand has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 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) [2024-12-02 08:36:18,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:18,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-12-02 08:36:18,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand