./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy1.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_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB --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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:31:59,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:31:59,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:31:59,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:31:59,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:31:59,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:31:59,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:31:59,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:31:59,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:31:59,340 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:31:59,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:31:59,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:31:59,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:31:59,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:31:59,343 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:31:59,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:31:59,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:31:59,344 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:31:59,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:59,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:59,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:31:59,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:59,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:31:59,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:31:59,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:31:59,348 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_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-27 23:31:59,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:31:59,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:31:59,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:31:59,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:31:59,705 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:31:59,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-27 23:32:02,821 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/data/e1ba87a7b/1e126c8c812a42b7b228b35c44abf872/FLAG45ece2eab [2024-11-27 23:32:03,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:32:03,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-27 23:32:03,156 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/data/e1ba87a7b/1e126c8c812a42b7b228b35c44abf872/FLAG45ece2eab [2024-11-27 23:32:03,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/data/e1ba87a7b/1e126c8c812a42b7b228b35c44abf872 [2024-11-27 23:32:03,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:32:03,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:32:03,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:03,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:32:03,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:32:03,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2520f2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03, skipping insertion in model container [2024-11-27 23:32:03,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,443 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:32:03,635 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_c4fd82df-56ad-4019-837f-df6e17a4255c/sv-benchmarks/c/weaver/test-easy1.wvr.c[1902,1915] [2024-11-27 23:32:03,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:03,652 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:32:03,678 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_c4fd82df-56ad-4019-837f-df6e17a4255c/sv-benchmarks/c/weaver/test-easy1.wvr.c[1902,1915] [2024-11-27 23:32:03,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:03,703 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:32:03,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03 WrapperNode [2024-11-27 23:32:03,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:03,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:03,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:32:03,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:32:03,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,741 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-11-27 23:32:03,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:03,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:32:03,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:32:03,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:32:03,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,780 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:32:03,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,786 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:32:03,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:32:03,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:32:03,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:32:03,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (1/1) ... [2024-11-27 23:32:03,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:03,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:32:03,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:32:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:32:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 23:32:03,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 23:32:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 23:32:03,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 23:32:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:32:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:32:03,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:32:03,888 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:32:03,973 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:32:03,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:32:04,204 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:32:04,204 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:32:04,378 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:32:04,379 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:32:04,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:04 BoogieIcfgContainer [2024-11-27 23:32:04,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:32:04,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:32:04,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:32:04,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:32:04,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:32:03" (1/3) ... [2024-11-27 23:32:04,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d1f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:04, skipping insertion in model container [2024-11-27 23:32:04,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:03" (2/3) ... [2024-11-27 23:32:04,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d1f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:04, skipping insertion in model container [2024-11-27 23:32:04,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:04" (3/3) ... [2024-11-27 23:32:04,392 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-27 23:32:04,413 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:32:04,416 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:32:04,416 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:32:04,482 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:32:04,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-11-27 23:32:04,546 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-27 23:32:04,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:32:04,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-27 23:32:04,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-11-27 23:32:04,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-11-27 23:32:04,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:32:04,578 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;@118e935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:32:04,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-27 23:32:04,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:32:04,588 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-27 23:32:04,588 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:32:04,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:04,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:04,589 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:04,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1673972632, now seen corresponding path program 1 times [2024-11-27 23:32:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693388214] [2024-11-27 23:32:04,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693388214] [2024-11-27 23:32:04,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693388214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:04,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:04,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:32:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176184141] [2024-11-27 23:32:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:04,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:32:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:04,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:32:04,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:32:04,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:04,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-27 23:32:04,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:04,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:04,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:05,048 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-27 23:32:05,052 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-27 23:32:05,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 281 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-11-27 23:32:05,054 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-27 23:32:05,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-27 23:32:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:32:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:32:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-27 23:32:05,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-11-27 23:32:05,076 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2024-11-27 23:32:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-27 23:32:05,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:32:05,085 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-27 23:32:05,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-27 23:32:05,091 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2024-11-27 23:32:05,091 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-27 23:32:05,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-27 23:32:05,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:05,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:05,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:32:05,092 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:05,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1303089981, now seen corresponding path program 1 times [2024-11-27 23:32:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891840298] [2024-11-27 23:32:05,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891840298] [2024-11-27 23:32:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891840298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:32:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134275642] [2024-11-27 23:32:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:05,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:05,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:05,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:05,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:05,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-27 23:32:05,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:05,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:05,433 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-11-27 23:32:05,438 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-27 23:32:05,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 118 events. 62/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 342 event pairs, 6 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 112. Up to 56 conditions per place. [2024-11-27 23:32:05,440 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-11-27 23:32:05,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-11-27 23:32:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-27 23:32:05,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-27 23:32:05,442 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 55 transitions. [2024-11-27 23:32:05,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-11-27 23:32:05,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:32:05,444 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-11-27 23:32:05,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-27 23:32:05,445 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2024-11-27 23:32:05,445 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-11-27 23:32:05,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-27 23:32:05,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:05,445 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:05,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:32:05,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:05,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1361659867, now seen corresponding path program 2 times [2024-11-27 23:32:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422010569] [2024-11-27 23:32:05,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:05,486 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:05,486 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422010569] [2024-11-27 23:32:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422010569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887458923] [2024-11-27 23:32:05,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:05,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:05,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:05,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:05,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:32:05,686 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:05,686 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:05,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:32:05,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:05,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887458923] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:06,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 8 [2024-11-27 23:32:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356952012] [2024-11-27 23:32:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:06,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:06,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:06,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:06,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:32:06,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-27 23:32:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:06,173 INFO L124 PetriNetUnfolderBase]: 91/183 cut-off events. [2024-11-27 23:32:06,173 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-27 23:32:06,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 183 events. 91/183 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 650 event pairs, 13 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 311. Up to 63 conditions per place. [2024-11-27 23:32:06,176 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 28 selfloop transitions, 13 changer transitions 6/50 dead transitions. [2024-11-27 23:32:06,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 50 transitions, 318 flow [2024-11-27 23:32:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-27 23:32:06,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-27 23:32:06,180 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 5 states and 63 transitions. [2024-11-27 23:32:06,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 50 transitions, 318 flow [2024-11-27 23:32:06,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:32:06,188 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 205 flow [2024-11-27 23:32:06,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-27 23:32:06,189 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places. [2024-11-27 23:32:06,189 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 205 flow [2024-11-27 23:32:06,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-27 23:32:06,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:06,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:06,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:32:06,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:06,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:06,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash -354621550, now seen corresponding path program 1 times [2024-11-27 23:32:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367052336] [2024-11-27 23:32:06,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:06,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:06,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367052336] [2024-11-27 23:32:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367052336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:06,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:06,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:32:06,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557004910] [2024-11-27 23:32:06,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:06,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:06,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:06,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:06,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:06,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:06,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-27 23:32:06,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:06,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:06,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:06,593 INFO L124 PetriNetUnfolderBase]: 82/171 cut-off events. [2024-11-27 23:32:06,594 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-27 23:32:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 171 events. 82/171 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 596 event pairs, 5 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 328. Up to 59 conditions per place. [2024-11-27 23:32:06,600 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 34 selfloop transitions, 11 changer transitions 4/52 dead transitions. [2024-11-27 23:32:06,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 440 flow [2024-11-27 23:32:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-27 23:32:06,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-27 23:32:06,602 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 205 flow. Second operand 5 states and 58 transitions. [2024-11-27 23:32:06,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 440 flow [2024-11-27 23:32:06,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 416 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-27 23:32:06,610 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 288 flow [2024-11-27 23:32:06,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-27 23:32:06,613 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places. [2024-11-27 23:32:06,614 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 288 flow [2024-11-27 23:32:06,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-27 23:32:06,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:06,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:06,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:32:06,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:06,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 535764196, now seen corresponding path program 2 times [2024-11-27 23:32:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:06,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231602184] [2024-11-27 23:32:06,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:06,641 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:06,641 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:06,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:06,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231602184] [2024-11-27 23:32:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231602184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:06,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553848730] [2024-11-27 23:32:06,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:06,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:06,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:06,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:32:06,792 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:06,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:06,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:32:06,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:06,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:07,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553848730] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:07,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:07,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 8 [2024-11-27 23:32:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664102987] [2024-11-27 23:32:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:07,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:07,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:07,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:32:07,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:07,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-27 23:32:07,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:07,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:07,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:07,115 INFO L124 PetriNetUnfolderBase]: 108/221 cut-off events. [2024-11-27 23:32:07,115 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-11-27 23:32:07,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 221 events. 108/221 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 817 event pairs, 7 based on Foata normal form. 2/223 useless extension candidates. Maximal degree in co-relation 739. Up to 88 conditions per place. [2024-11-27 23:32:07,118 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 36 selfloop transitions, 17 changer transitions 8/64 dead transitions. [2024-11-27 23:32:07,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 612 flow [2024-11-27 23:32:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-27 23:32:07,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-11-27 23:32:07,119 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 288 flow. Second operand 5 states and 64 transitions. [2024-11-27 23:32:07,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 612 flow [2024-11-27 23:32:07,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 602 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-27 23:32:07,127 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 428 flow [2024-11-27 23:32:07,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-27 23:32:07,128 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 27 predicate places. [2024-11-27 23:32:07,128 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 428 flow [2024-11-27 23:32:07,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-27 23:32:07,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:07,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:07,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:07,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:07,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:07,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2089884335, now seen corresponding path program 1 times [2024-11-27 23:32:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:07,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526111848] [2024-11-27 23:32:07,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526111848] [2024-11-27 23:32:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526111848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915919221] [2024-11-27 23:32:07,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:07,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:07,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:32:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:07,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:07,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:07,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915919221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:07,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-11-27 23:32:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733742557] [2024-11-27 23:32:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:07,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:07,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:07,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:32:07,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:07,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-27 23:32:07,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:07,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:07,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:07,802 INFO L124 PetriNetUnfolderBase]: 97/203 cut-off events. [2024-11-27 23:32:07,803 INFO L125 PetriNetUnfolderBase]: For 1207/1207 co-relation queries the response was YES. [2024-11-27 23:32:07,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 203 events. 97/203 cut-off events. For 1207/1207 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 749 event pairs, 7 based on Foata normal form. 2/205 useless extension candidates. Maximal degree in co-relation 826. Up to 74 conditions per place. [2024-11-27 23:32:07,805 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 30 selfloop transitions, 7 changer transitions 22/62 dead transitions. [2024-11-27 23:32:07,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 703 flow [2024-11-27 23:32:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-11-27 23:32:07,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-27 23:32:07,808 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 428 flow. Second operand 6 states and 64 transitions. [2024-11-27 23:32:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 703 flow [2024-11-27 23:32:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 661 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-27 23:32:07,818 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 364 flow [2024-11-27 23:32:07,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2024-11-27 23:32:07,820 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2024-11-27 23:32:07,820 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 364 flow [2024-11-27 23:32:07,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-27 23:32:07,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:07,821 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:07,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:32:08,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 23:32:08,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:08,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1950988103, now seen corresponding path program 2 times [2024-11-27 23:32:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593446788] [2024-11-27 23:32:08,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:08,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:08,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:08,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593446788] [2024-11-27 23:32:08,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593446788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247828748] [2024-11-27 23:32:08,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:08,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:08,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:08,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:08,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:32:08,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:08,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:08,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:08,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:08,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247828748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:08,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-27 23:32:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477346934] [2024-11-27 23:32:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:08,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:08,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:08,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:08,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:08,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-27 23:32:08,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:08,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:08,406 INFO L124 PetriNetUnfolderBase]: 60/124 cut-off events. [2024-11-27 23:32:08,406 INFO L125 PetriNetUnfolderBase]: For 1005/1007 co-relation queries the response was YES. [2024-11-27 23:32:08,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 124 events. 60/124 cut-off events. For 1005/1007 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 348 event pairs, 6 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 708. Up to 47 conditions per place. [2024-11-27 23:32:08,410 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 23 selfloop transitions, 4 changer transitions 17/47 dead transitions. [2024-11-27 23:32:08,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 553 flow [2024-11-27 23:32:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-27 23:32:08,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-27 23:32:08,412 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 364 flow. Second operand 6 states and 56 transitions. [2024-11-27 23:32:08,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 553 flow [2024-11-27 23:32:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 523 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-27 23:32:08,422 INFO L231 Difference]: Finished difference. Result has 54 places, 25 transitions, 241 flow [2024-11-27 23:32:08,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=54, PETRI_TRANSITIONS=25} [2024-11-27 23:32:08,424 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 34 predicate places. [2024-11-27 23:32:08,426 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 25 transitions, 241 flow [2024-11-27 23:32:08,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2024-11-27 23:32:08,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:08,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:08,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:32:08,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:32:08,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:08,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash -578274162, now seen corresponding path program 3 times [2024-11-27 23:32:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591723622] [2024-11-27 23:32:08,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:08,639 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:32:08,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591723622] [2024-11-27 23:32:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591723622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134589220] [2024-11-27 23:32:08,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:08,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:08,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:08,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:08,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:32:08,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:32:08,772 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:08,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:08,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:32:08,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134589220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-27 23:32:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638960710] [2024-11-27 23:32:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:08,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:08,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:08,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:08,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:08,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 25 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-27 23:32:08,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:08,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:08,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:08,934 INFO L124 PetriNetUnfolderBase]: 45/98 cut-off events. [2024-11-27 23:32:08,934 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2024-11-27 23:32:08,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 98 events. 45/98 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 229 event pairs, 5 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 540. Up to 44 conditions per place. [2024-11-27 23:32:08,936 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 27 selfloop transitions, 8 changer transitions 4/42 dead transitions. [2024-11-27 23:32:08,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 423 flow [2024-11-27 23:32:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-11-27 23:32:08,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-11-27 23:32:08,937 INFO L175 Difference]: Start difference. First operand has 54 places, 25 transitions, 241 flow. Second operand 6 states and 61 transitions. [2024-11-27 23:32:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 423 flow [2024-11-27 23:32:08,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 370 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-27 23:32:08,942 INFO L231 Difference]: Finished difference. Result has 51 places, 27 transitions, 258 flow [2024-11-27 23:32:08,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2024-11-27 23:32:08,943 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-11-27 23:32:08,943 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 258 flow [2024-11-27 23:32:08,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-27 23:32:08,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:08,943 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:08,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:09,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:09,144 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:09,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1909860670, now seen corresponding path program 4 times [2024-11-27 23:32:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:09,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147061660] [2024-11-27 23:32:09,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:32:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:09,154 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:32:09,154 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:09,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147061660] [2024-11-27 23:32:09,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147061660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791707444] [2024-11-27 23:32:09,230 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:32:09,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:09,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:09,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:09,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:32:09,281 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:32:09,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:09,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:32:09,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:09,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:09,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791707444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:09,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:09,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 23:32:09,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218756324] [2024-11-27 23:32:09,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:09,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:32:09,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:09,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:32:09,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:09,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:09,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 27 transitions, 258 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 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) [2024-11-27 23:32:09,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:09,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:09,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:09,740 INFO L124 PetriNetUnfolderBase]: 65/141 cut-off events. [2024-11-27 23:32:09,740 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2024-11-27 23:32:09,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 141 events. 65/141 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 403 event pairs, 0 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 775. Up to 53 conditions per place. [2024-11-27 23:32:09,743 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 35 selfloop transitions, 18 changer transitions 6/62 dead transitions. [2024-11-27 23:32:09,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 638 flow [2024-11-27 23:32:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:32:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:32:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-11-27 23:32:09,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-27 23:32:09,747 INFO L175 Difference]: Start difference. First operand has 51 places, 27 transitions, 258 flow. Second operand 12 states and 114 transitions. [2024-11-27 23:32:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 638 flow [2024-11-27 23:32:09,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 626 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-27 23:32:09,754 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 452 flow [2024-11-27 23:32:09,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-11-27 23:32:09,756 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2024-11-27 23:32:09,757 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 452 flow [2024-11-27 23:32:09,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 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) [2024-11-27 23:32:09,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:09,758 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:09,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:32:09,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:09,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:09,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash 696351999, now seen corresponding path program 5 times [2024-11-27 23:32:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:09,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569172910] [2024-11-27 23:32:09,963 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:32:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:09,975 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:09,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:10,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:10,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569172910] [2024-11-27 23:32:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569172910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979543542] [2024-11-27 23:32:10,061 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:32:10,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:10,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:10,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:32:10,123 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:10,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:10,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:32:10,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:10,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979543542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:10,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-27 23:32:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004371042] [2024-11-27 23:32:10,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:10,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:32:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:10,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:32:10,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:10,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:10,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 452 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2024-11-27 23:32:10,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:10,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:10,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:10,515 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-11-27 23:32:10,515 INFO L125 PetriNetUnfolderBase]: For 2114/2114 co-relation queries the response was YES. [2024-11-27 23:32:10,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 189 events. 84/189 cut-off events. For 2114/2114 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 653 event pairs, 1 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 1193. Up to 90 conditions per place. [2024-11-27 23:32:10,518 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 45 selfloop transitions, 15 changer transitions 4/67 dead transitions. [2024-11-27 23:32:10,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 911 flow [2024-11-27 23:32:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:32:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 23:32:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-27 23:32:10,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-27 23:32:10,520 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 452 flow. Second operand 9 states and 84 transitions. [2024-11-27 23:32:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 911 flow [2024-11-27 23:32:10,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 809 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-11-27 23:32:10,530 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 555 flow [2024-11-27 23:32:10,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2024-11-27 23:32:10,531 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2024-11-27 23:32:10,531 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 555 flow [2024-11-27 23:32:10,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2024-11-27 23:32:10,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:10,532 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:10,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:32:10,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:32:10,736 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:10,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -669221119, now seen corresponding path program 6 times [2024-11-27 23:32:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342893606] [2024-11-27 23:32:10,737 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:32:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:10,747 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 23:32:10,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342893606] [2024-11-27 23:32:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342893606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271877932] [2024-11-27 23:32:10,810 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:32:10,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:10,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:10,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:32:10,869 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 23:32:10,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:10,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:10,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:32:10,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:10,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271877932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:10,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:10,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-11-27 23:32:10,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844712889] [2024-11-27 23:32:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:10,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:10,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:10,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:10,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:10,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 555 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-27 23:32:10,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:10,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:10,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:11,073 INFO L124 PetriNetUnfolderBase]: 89/213 cut-off events. [2024-11-27 23:32:11,073 INFO L125 PetriNetUnfolderBase]: For 2586/2588 co-relation queries the response was YES. [2024-11-27 23:32:11,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 213 events. 89/213 cut-off events. For 2586/2588 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 831 event pairs, 6 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 1283. Up to 82 conditions per place. [2024-11-27 23:32:11,077 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 44 selfloop transitions, 12 changer transitions 6/65 dead transitions. [2024-11-27 23:32:11,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 837 flow [2024-11-27 23:32:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-27 23:32:11,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-27 23:32:11,079 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 555 flow. Second operand 6 states and 59 transitions. [2024-11-27 23:32:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 837 flow [2024-11-27 23:32:11,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 748 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-11-27 23:32:11,092 INFO L231 Difference]: Finished difference. Result has 78 places, 48 transitions, 540 flow [2024-11-27 23:32:11,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=78, PETRI_TRANSITIONS=48} [2024-11-27 23:32:11,093 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2024-11-27 23:32:11,093 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 48 transitions, 540 flow [2024-11-27 23:32:11,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-11-27 23:32:11,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:11,095 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:11,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:32:11,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:32:11,296 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:11,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -113943525, now seen corresponding path program 7 times [2024-11-27 23:32:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:11,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884487211] [2024-11-27 23:32:11,296 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:32:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884487211] [2024-11-27 23:32:11,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884487211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194513624] [2024-11-27 23:32:11,386 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:32:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:11,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:11,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:32:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:11,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:32:11,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:11,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194513624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:11,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 23:32:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980077379] [2024-11-27 23:32:11,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:11,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:32:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:11,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:32:11,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:11,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:11,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 48 transitions, 540 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 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) [2024-11-27 23:32:11,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:11,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:11,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:11,827 INFO L124 PetriNetUnfolderBase]: 90/202 cut-off events. [2024-11-27 23:32:11,827 INFO L125 PetriNetUnfolderBase]: For 2916/2916 co-relation queries the response was YES. [2024-11-27 23:32:11,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 202 events. 90/202 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 720 event pairs, 0 based on Foata normal form. 4/206 useless extension candidates. Maximal degree in co-relation 1229. Up to 106 conditions per place. [2024-11-27 23:32:11,830 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 46 selfloop transitions, 19 changer transitions 6/74 dead transitions. [2024-11-27 23:32:11,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 919 flow [2024-11-27 23:32:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:32:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:32:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-11-27 23:32:11,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-11-27 23:32:11,832 INFO L175 Difference]: Start difference. First operand has 78 places, 48 transitions, 540 flow. Second operand 12 states and 106 transitions. [2024-11-27 23:32:11,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 74 transitions, 919 flow [2024-11-27 23:32:11,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 74 transitions, 880 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-27 23:32:11,845 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 597 flow [2024-11-27 23:32:11,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2024-11-27 23:32:11,846 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 66 predicate places. [2024-11-27 23:32:11,846 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 597 flow [2024-11-27 23:32:11,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 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) [2024-11-27 23:32:11,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:11,846 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:11,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:32:12,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:12,051 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:12,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1403886350, now seen corresponding path program 8 times [2024-11-27 23:32:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213051093] [2024-11-27 23:32:12,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:12,063 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:12,063 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213051093] [2024-11-27 23:32:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213051093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729420792] [2024-11-27 23:32:12,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:12,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:12,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:12,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:32:12,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:32:12,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:12,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:12,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:32:12,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729420792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-27 23:32:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428014809] [2024-11-27 23:32:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:12,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:12,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:12,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:12,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:12,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-27 23:32:12,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:12,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:12,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:12,442 INFO L124 PetriNetUnfolderBase]: 88/188 cut-off events. [2024-11-27 23:32:12,443 INFO L125 PetriNetUnfolderBase]: For 2483/2483 co-relation queries the response was YES. [2024-11-27 23:32:12,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 188 events. 88/188 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 645 event pairs, 2 based on Foata normal form. 4/192 useless extension candidates. Maximal degree in co-relation 1181. Up to 93 conditions per place. [2024-11-27 23:32:12,445 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 16 selfloop transitions, 1 changer transitions 47/67 dead transitions. [2024-11-27 23:32:12,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 67 transitions, 882 flow [2024-11-27 23:32:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-27 23:32:12,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-27 23:32:12,447 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 597 flow. Second operand 6 states and 59 transitions. [2024-11-27 23:32:12,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 67 transitions, 882 flow [2024-11-27 23:32:12,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 67 transitions, 805 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-27 23:32:12,459 INFO L231 Difference]: Finished difference. Result has 83 places, 19 transitions, 167 flow [2024-11-27 23:32:12,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=83, PETRI_TRANSITIONS=19} [2024-11-27 23:32:12,461 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 63 predicate places. [2024-11-27 23:32:12,461 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 19 transitions, 167 flow [2024-11-27 23:32:12,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-27 23:32:12,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:12,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:12,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:32:12,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:32:12,666 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 23:32:12,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1452140740, now seen corresponding path program 9 times [2024-11-27 23:32:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921765244] [2024-11-27 23:32:12,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:12,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:12,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:32:12,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921765244] [2024-11-27 23:32:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921765244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590718170] [2024-11-27 23:32:12,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:32:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:12,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:12,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:32:12,866 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:32:12,866 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:12,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:32:12,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:32:12,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590718170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:12,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-27 23:32:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576398181] [2024-11-27 23:32:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:12,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:12,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:12,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:12,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:32:12,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-27 23:32:12,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 19 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-27 23:32:12,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:12,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-27 23:32:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:12,984 INFO L124 PetriNetUnfolderBase]: 11/35 cut-off events. [2024-11-27 23:32:12,984 INFO L125 PetriNetUnfolderBase]: For 503/503 co-relation queries the response was YES. [2024-11-27 23:32:12,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 35 events. 11/35 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 210. Up to 12 conditions per place. [2024-11-27 23:32:12,985 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2024-11-27 23:32:12,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 23 transitions, 231 flow [2024-11-27 23:32:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 50 transitions. [2024-11-27 23:32:12,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-11-27 23:32:12,986 INFO L175 Difference]: Start difference. First operand has 83 places, 19 transitions, 167 flow. Second operand 6 states and 50 transitions. [2024-11-27 23:32:12,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 23 transitions, 231 flow [2024-11-27 23:32:12,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 23 transitions, 165 flow, removed 21 selfloop flow, removed 19 redundant places. [2024-11-27 23:32:12,990 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-11-27 23:32:12,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-11-27 23:32:12,992 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-11-27 23:32:12,992 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-11-27 23:32:12,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-27 23:32:12,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-27 23:32:12,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-27 23:32:12,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-27 23:32:13,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:32:13,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:13,196 INFO L422 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1] [2024-11-27 23:32:13,199 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:32:13,199 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:32:13,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:32:13 BasicIcfg [2024-11-27 23:32:13,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:32:13,205 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:32:13,205 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:32:13,205 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:32:13,206 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:04" (3/4) ... [2024-11-27 23:32:13,209 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:32:13,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-27 23:32:13,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-27 23:32:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-27 23:32:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-27 23:32:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-27 23:32:13,221 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-27 23:32:13,297 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:32:13,298 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:32:13,298 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:32:13,299 INFO L158 Benchmark]: Toolchain (without parser) took 9879.62ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 119.3MB in the beginning and 154.5MB in the end (delta: -35.1MB). Peak memory consumption was 231.2MB. Max. memory is 16.1GB. [2024-11-27 23:32:13,299 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:32:13,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.01ms. Allocated memory is still 142.6MB. Free memory was 119.3MB in the beginning and 108.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:32:13,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.68ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 106.8MB in the end (delta: 980.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:32:13,300 INFO L158 Benchmark]: Boogie Preprocessor took 61.63ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:32:13,300 INFO L158 Benchmark]: RCFGBuilder took 573.61ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 86.3MB in the end (delta: 19.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:32:13,301 INFO L158 Benchmark]: TraceAbstraction took 8822.80ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 85.8MB in the beginning and 159.2MB in the end (delta: -73.4MB). Peak memory consumption was 189.3MB. Max. memory is 16.1GB. [2024-11-27 23:32:13,301 INFO L158 Benchmark]: Witness Printer took 92.70ms. Allocated memory is still 411.0MB. Free memory was 159.2MB in the beginning and 154.5MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:32:13,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.01ms. Allocated memory is still 142.6MB. Free memory was 119.3MB in the beginning and 108.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.68ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 106.8MB in the end (delta: 980.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.63ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 573.61ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 86.3MB in the end (delta: 19.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8822.80ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 85.8MB in the beginning and 159.2MB in the end (delta: -73.4MB). Peak memory consumption was 189.3MB. Max. memory is 16.1GB. * Witness Printer took 92.70ms. Allocated memory is still 411.0MB. Free memory was 159.2MB in the beginning and 154.5MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 234 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 234 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 0 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 194 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=597occurred in iteration=12, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 431 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1000 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 30 InterpolantComputations, 11 PerfectInterpolantSequences, 44/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 23:32:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fd82df-56ad-4019-837f-df6e17a4255c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE