./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.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_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/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_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/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_e770795d-fdc1-4325-84e8-f74279db5890/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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:55:39,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:55:39,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:55:39,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:55:39,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:55:39,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:55:39,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:55:39,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:55:39,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:55:39,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:55:39,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:55:39,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:55:39,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:55:39,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:55:39,636 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:55:39,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:55:39,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:55:39,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:55:39,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:55:39,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:55:39,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:55:39,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:55:39,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:55:39,639 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:39,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:39,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:39,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:55:39,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:55:39,641 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_e770795d-fdc1-4325-84e8-f74279db5890/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 -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-28 02:55:39,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:55:39,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:55:39,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:55:39,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:55:39,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:55:39,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-28 02:55:43,129 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/data/b1a62f199/b00fe1f46f0f44fc8616719fc27e44f2/FLAG3d343bc62 [2024-11-28 02:55:43,486 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:55:43,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-28 02:55:43,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/data/b1a62f199/b00fe1f46f0f44fc8616719fc27e44f2/FLAG3d343bc62 [2024-11-28 02:55:43,509 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/data/b1a62f199/b00fe1f46f0f44fc8616719fc27e44f2 [2024-11-28 02:55:43,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:55:43,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:55:43,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:55:43,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:55:43,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:55:43,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed8c462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43, skipping insertion in model container [2024-11-28 02:55:43,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:55:43,761 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_e770795d-fdc1-4325-84e8-f74279db5890/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-28 02:55:43,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:55:43,786 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:55:43,819 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_e770795d-fdc1-4325-84e8-f74279db5890/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-28 02:55:43,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:55:43,855 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:55:43,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43 WrapperNode [2024-11-28 02:55:43,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:55:43,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:55:43,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:55:43,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:55:43,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,930 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 331 [2024-11-28 02:55:43,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:55:43,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:55:43,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:55:43,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:55:43,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,985 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 02:55:43,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:43,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:55:44,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:55:44,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:55:44,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:55:44,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (1/1) ... [2024-11-28 02:55:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:44,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:55:44,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:55:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:55:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:55:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:55:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:55:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:55:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:55:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:55:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:55:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:55:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:55:44,131 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:55:44,288 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:55:44,291 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:55:45,055 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:55:45,055 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:55:45,632 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:55:45,632 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:55:45,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:45 BoogieIcfgContainer [2024-11-28 02:55:45,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:55:45,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:55:45,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:55:45,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:55:45,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:55:43" (1/3) ... [2024-11-28 02:55:45,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682fde1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:45, skipping insertion in model container [2024-11-28 02:55:45,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:55:43" (2/3) ... [2024-11-28 02:55:45,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682fde1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:55:45, skipping insertion in model container [2024-11-28 02:55:45,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:55:45" (3/3) ... [2024-11-28 02:55:45,644 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-28 02:55:45,663 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:55:45,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-1.wvr-bad.c that has 4 procedures, 45 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 02:55:45,665 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:55:45,752 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:55:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 61 transitions, 143 flow [2024-11-28 02:55:45,859 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2024-11-28 02:55:45,865 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:55:45,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 17/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2024-11-28 02:55:45,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 61 transitions, 143 flow [2024-11-28 02:55:45,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 57 transitions, 132 flow [2024-11-28 02:55:45,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:55:45,916 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;@737b451e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:55:45,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:55:45,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:55:45,949 INFO L124 PetriNetUnfolderBase]: 17/56 cut-off events. [2024-11-28 02:55:45,949 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:55:45,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:45,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:45,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:45,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1211094217, now seen corresponding path program 1 times [2024-11-28 02:55:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357441750] [2024-11-28 02:55:45,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357441750] [2024-11-28 02:55:46,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357441750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:46,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:46,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:46,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496122971] [2024-11-28 02:55:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:46,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:55:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:46,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:55:46,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:55:46,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:46,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-11-28 02:55:46,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:46,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:46,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:46,933 INFO L124 PetriNetUnfolderBase]: 1168/1724 cut-off events. [2024-11-28 02:55:46,934 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-28 02:55:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 1724 events. 1168/1724 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6962 event pairs, 608 based on Foata normal form. 0/1335 useless extension candidates. Maximal degree in co-relation 3018. Up to 1448 conditions per place. [2024-11-28 02:55:46,970 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 37 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-28 02:55:46,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 200 flow [2024-11-28 02:55:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:55:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 02:55:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-11-28 02:55:46,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-28 02:55:46,992 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 132 flow. Second operand 2 states and 80 transitions. [2024-11-28 02:55:46,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 200 flow [2024-11-28 02:55:47,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 188 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:55:47,007 INFO L231 Difference]: Finished difference. Result has 45 places, 54 transitions, 114 flow [2024-11-28 02:55:47,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=54} [2024-11-28 02:55:47,018 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-11-28 02:55:47,018 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 114 flow [2024-11-28 02:55:47,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-11-28 02:55:47,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:47,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:47,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:55:47,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:47,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash -581155928, now seen corresponding path program 1 times [2024-11-28 02:55:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:47,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746112667] [2024-11-28 02:55:47,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746112667] [2024-11-28 02:55:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746112667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996260859] [2024-11-28 02:55:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:47,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:47,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:47,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:47,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:47,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:47,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-28 02:55:47,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:47,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:48,093 INFO L124 PetriNetUnfolderBase]: 2327/3658 cut-off events. [2024-11-28 02:55:48,093 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-28 02:55:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6607 conditions, 3658 events. 2327/3658 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18920 event pairs, 608 based on Foata normal form. 1/2839 useless extension candidates. Maximal degree in co-relation 6604. Up to 1685 conditions per place. [2024-11-28 02:55:48,126 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 59 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2024-11-28 02:55:48,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 305 flow [2024-11-28 02:55:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-28 02:55:48,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2024-11-28 02:55:48,129 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 114 flow. Second operand 3 states and 126 transitions. [2024-11-28 02:55:48,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 305 flow [2024-11-28 02:55:48,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:55:48,133 INFO L231 Difference]: Finished difference. Result has 48 places, 58 transitions, 147 flow [2024-11-28 02:55:48,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=58} [2024-11-28 02:55:48,134 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-11-28 02:55:48,134 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 58 transitions, 147 flow [2024-11-28 02:55:48,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-28 02:55:48,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:48,135 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:48,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:55:48,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:48,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -96336806, now seen corresponding path program 1 times [2024-11-28 02:55:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:48,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414396072] [2024-11-28 02:55:48,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414396072] [2024-11-28 02:55:48,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414396072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:48,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:48,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211104633] [2024-11-28 02:55:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:48,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:48,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:48,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:48,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:48,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:48,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:48,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:48,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:49,223 INFO L124 PetriNetUnfolderBase]: 4376/6666 cut-off events. [2024-11-28 02:55:49,224 INFO L125 PetriNetUnfolderBase]: For 1043/1043 co-relation queries the response was YES. [2024-11-28 02:55:49,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13306 conditions, 6666 events. 4376/6666 cut-off events. For 1043/1043 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 36162 event pairs, 1536 based on Foata normal form. 236/5370 useless extension candidates. Maximal degree in co-relation 13301. Up to 3068 conditions per place. [2024-11-28 02:55:49,281 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-28 02:55:49,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 353 flow [2024-11-28 02:55:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-28 02:55:49,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6775956284153005 [2024-11-28 02:55:49,284 INFO L175 Difference]: Start difference. First operand has 48 places, 58 transitions, 147 flow. Second operand 3 states and 124 transitions. [2024-11-28 02:55:49,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 353 flow [2024-11-28 02:55:49,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:55:49,289 INFO L231 Difference]: Finished difference. Result has 50 places, 60 transitions, 167 flow [2024-11-28 02:55:49,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=60} [2024-11-28 02:55:49,290 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-11-28 02:55:49,291 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 60 transitions, 167 flow [2024-11-28 02:55:49,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:49,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:49,292 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:49,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:55:49,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:49,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1331316460, now seen corresponding path program 1 times [2024-11-28 02:55:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:49,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522445659] [2024-11-28 02:55:49,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522445659] [2024-11-28 02:55:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522445659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:49,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:55:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808511097] [2024-11-28 02:55:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:49,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:49,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:49,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:49,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:49,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:49,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:49,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:49,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:50,840 INFO L124 PetriNetUnfolderBase]: 8305/13348 cut-off events. [2024-11-28 02:55:50,840 INFO L125 PetriNetUnfolderBase]: For 3342/3366 co-relation queries the response was YES. [2024-11-28 02:55:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27098 conditions, 13348 events. 8305/13348 cut-off events. For 3342/3366 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 88199 event pairs, 2722 based on Foata normal form. 240/10619 useless extension candidates. Maximal degree in co-relation 27092. Up to 5665 conditions per place. [2024-11-28 02:55:50,933 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 74 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-11-28 02:55:50,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 93 transitions, 422 flow [2024-11-28 02:55:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-28 02:55:50,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2024-11-28 02:55:50,935 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 167 flow. Second operand 3 states and 126 transitions. [2024-11-28 02:55:50,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 93 transitions, 422 flow [2024-11-28 02:55:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:55:50,943 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 178 flow [2024-11-28 02:55:50,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-11-28 02:55:50,944 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-28 02:55:50,945 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 178 flow [2024-11-28 02:55:50,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:55:50,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:50,945 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:50,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:55:50,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:50,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1152449705, now seen corresponding path program 1 times [2024-11-28 02:55:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298515010] [2024-11-28 02:55:50,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:51,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298515010] [2024-11-28 02:55:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298515010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:51,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085244338] [2024-11-28 02:55:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:51,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:51,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:51,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:51,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-11-28 02:55:51,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-28 02:55:51,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:51,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-11-28 02:55:51,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:53,160 INFO L124 PetriNetUnfolderBase]: 13331/19439 cut-off events. [2024-11-28 02:55:53,161 INFO L125 PetriNetUnfolderBase]: For 6515/6537 co-relation queries the response was YES. [2024-11-28 02:55:53,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42508 conditions, 19439 events. 13331/19439 cut-off events. For 6515/6537 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 114347 event pairs, 6174 based on Foata normal form. 0/15578 useless extension candidates. Maximal degree in co-relation 42501. Up to 10586 conditions per place. [2024-11-28 02:55:53,275 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 69 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-28 02:55:53,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 420 flow [2024-11-28 02:55:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-28 02:55:53,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2024-11-28 02:55:53,279 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 178 flow. Second operand 3 states and 116 transitions. [2024-11-28 02:55:53,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 420 flow [2024-11-28 02:55:53,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:55:53,286 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 206 flow [2024-11-28 02:55:53,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2024-11-28 02:55:53,287 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2024-11-28 02:55:53,287 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 206 flow [2024-11-28 02:55:53,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-28 02:55:53,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:53,288 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:53,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:55:53,288 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:53,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1331891046, now seen corresponding path program 1 times [2024-11-28 02:55:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068172237] [2024-11-28 02:55:53,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068172237] [2024-11-28 02:55:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068172237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:53,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:53,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:55:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998794840] [2024-11-28 02:55:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:53,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:55:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:53,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:55:53,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:55:53,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:53,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-28 02:55:53,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:53,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:53,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:55,092 INFO L124 PetriNetUnfolderBase]: 12942/19994 cut-off events. [2024-11-28 02:55:55,092 INFO L125 PetriNetUnfolderBase]: For 9546/9730 co-relation queries the response was YES. [2024-11-28 02:55:55,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43960 conditions, 19994 events. 12942/19994 cut-off events. For 9546/9730 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 129055 event pairs, 9078 based on Foata normal form. 285/16411 useless extension candidates. Maximal degree in co-relation 43952. Up to 13549 conditions per place. [2024-11-28 02:55:55,245 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 74 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-28 02:55:55,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 462 flow [2024-11-28 02:55:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:55:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:55:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-11-28 02:55:55,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5704918032786885 [2024-11-28 02:55:55,248 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 206 flow. Second operand 5 states and 174 transitions. [2024-11-28 02:55:55,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 462 flow [2024-11-28 02:55:55,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:55:55,278 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 248 flow [2024-11-28 02:55:55,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2024-11-28 02:55:55,279 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-11-28 02:55:55,279 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 248 flow [2024-11-28 02:55:55,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-28 02:55:55,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:55,280 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:55,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:55:55,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:55,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1664312523, now seen corresponding path program 1 times [2024-11-28 02:55:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200046209] [2024-11-28 02:55:55,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:55,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:55:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200046209] [2024-11-28 02:55:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200046209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:55:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574088385] [2024-11-28 02:55:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:55:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:55,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:55:55,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:55:55,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-11-28 02:55:55,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-28 02:55:55,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:55,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-11-28 02:55:55,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:55:56,919 INFO L124 PetriNetUnfolderBase]: 13390/19544 cut-off events. [2024-11-28 02:55:56,919 INFO L125 PetriNetUnfolderBase]: For 5744/6085 co-relation queries the response was YES. [2024-11-28 02:55:56,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43058 conditions, 19544 events. 13390/19544 cut-off events. For 5744/6085 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 106120 event pairs, 5854 based on Foata normal form. 20/16339 useless extension candidates. Maximal degree in co-relation 43047. Up to 10044 conditions per place. [2024-11-28 02:55:57,004 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 67 selfloop transitions, 5 changer transitions 5/90 dead transitions. [2024-11-28 02:55:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 458 flow [2024-11-28 02:55:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:55:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:55:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-28 02:55:57,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2024-11-28 02:55:57,006 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 248 flow. Second operand 3 states and 112 transitions. [2024-11-28 02:55:57,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 458 flow [2024-11-28 02:55:57,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 90 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:55:57,012 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 228 flow [2024-11-28 02:55:57,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-11-28 02:55:57,013 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-11-28 02:55:57,014 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 228 flow [2024-11-28 02:55:57,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-28 02:55:57,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:55:57,014 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:57,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:55:57,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:55:57,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1323300852, now seen corresponding path program 1 times [2024-11-28 02:55:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952618909] [2024-11-28 02:55:57,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952618909] [2024-11-28 02:55:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952618909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501515256] [2024-11-28 02:55:58,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:58,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:58,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:55:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:58,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:55:58,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:58,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:55:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:58,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:59,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-28 02:55:59,676 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 02:55:59,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-28 02:55:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:55:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501515256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:55:59,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:55:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-28 02:55:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502490638] [2024-11-28 02:55:59,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:55:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:55:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:59,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:55:59,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:55:59,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:55:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 228 flow. Second operand has 22 states, 22 states have (on average 24.09090909090909) internal successors, (530), 22 states have internal predecessors, (530), 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) [2024-11-28 02:55:59,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:55:59,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:55:59,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:07,803 INFO L124 PetriNetUnfolderBase]: 49834/75960 cut-off events. [2024-11-28 02:56:07,803 INFO L125 PetriNetUnfolderBase]: For 44527/46918 co-relation queries the response was YES. [2024-11-28 02:56:07,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175155 conditions, 75960 events. 49834/75960 cut-off events. For 44527/46918 co-relation queries the response was YES. Maximal size of possible extension queue 1890. Compared 554954 event pairs, 5393 based on Foata normal form. 60/60648 useless extension candidates. Maximal degree in co-relation 175143. Up to 11894 conditions per place. [2024-11-28 02:56:08,126 INFO L140 encePairwiseOnDemand]: 41/61 looper letters, 342 selfloop transitions, 72 changer transitions 9/442 dead transitions. [2024-11-28 02:56:08,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 442 transitions, 2281 flow [2024-11-28 02:56:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:56:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:56:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 873 transitions. [2024-11-28 02:56:08,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222380612972203 [2024-11-28 02:56:08,131 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 228 flow. Second operand 23 states and 873 transitions. [2024-11-28 02:56:08,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 442 transitions, 2281 flow [2024-11-28 02:56:08,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 442 transitions, 2195 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-28 02:56:08,171 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 901 flow [2024-11-28 02:56:08,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=901, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-11-28 02:56:08,172 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2024-11-28 02:56:08,172 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 901 flow [2024-11-28 02:56:08,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.09090909090909) internal successors, (530), 22 states have internal predecessors, (530), 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) [2024-11-28 02:56:08,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:08,173 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:08,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:56:08,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:56:08,378 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:08,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1239154986, now seen corresponding path program 1 times [2024-11-28 02:56:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:08,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860009639] [2024-11-28 02:56:08,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:56:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860009639] [2024-11-28 02:56:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860009639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:08,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:08,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:56:08,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418007841] [2024-11-28 02:56:08,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:08,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:56:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:08,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:56:08,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:56:08,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-11-28 02:56:08,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 901 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-28 02:56:08,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:08,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-11-28 02:56:08,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:18,620 INFO L124 PetriNetUnfolderBase]: 70350/106081 cut-off events. [2024-11-28 02:56:18,620 INFO L125 PetriNetUnfolderBase]: For 207022/211824 co-relation queries the response was YES. [2024-11-28 02:56:18,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323922 conditions, 106081 events. 70350/106081 cut-off events. For 207022/211824 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 791842 event pairs, 36619 based on Foata normal form. 136/84978 useless extension candidates. Maximal degree in co-relation 323898. Up to 69060 conditions per place. [2024-11-28 02:56:19,330 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 129 selfloop transitions, 8 changer transitions 2/155 dead transitions. [2024-11-28 02:56:19,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 155 transitions, 1276 flow [2024-11-28 02:56:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:56:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:56:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-28 02:56:19,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2024-11-28 02:56:19,332 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 901 flow. Second operand 3 states and 116 transitions. [2024-11-28 02:56:19,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 155 transitions, 1276 flow [2024-11-28 02:56:20,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 155 transitions, 1210 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-28 02:56:20,721 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 766 flow [2024-11-28 02:56:20,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=766, PETRI_PLACES=95, PETRI_TRANSITIONS=122} [2024-11-28 02:56:20,722 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2024-11-28 02:56:20,722 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 766 flow [2024-11-28 02:56:20,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-28 02:56:20,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:20,722 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:20,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:56:20,723 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:20,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash 622797277, now seen corresponding path program 1 times [2024-11-28 02:56:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614530183] [2024-11-28 02:56:20,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:56:20,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614530183] [2024-11-28 02:56:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614530183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:56:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545537671] [2024-11-28 02:56:20,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:20,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:56:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:20,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:56:20,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:56:20,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:56:20,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 122 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-28 02:56:20,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:20,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:56:20,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:56:30,281 INFO L124 PetriNetUnfolderBase]: 60126/93918 cut-off events. [2024-11-28 02:56:30,281 INFO L125 PetriNetUnfolderBase]: For 267868/274469 co-relation queries the response was YES. [2024-11-28 02:56:30,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300426 conditions, 93918 events. 60126/93918 cut-off events. For 267868/274469 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 718608 event pairs, 18351 based on Foata normal form. 1136/75848 useless extension candidates. Maximal degree in co-relation 300401. Up to 54699 conditions per place. [2024-11-28 02:56:30,933 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 131 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-11-28 02:56:30,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 153 transitions, 1234 flow [2024-11-28 02:56:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:56:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:56:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-28 02:56:30,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:56:30,936 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 766 flow. Second operand 3 states and 122 transitions. [2024-11-28 02:56:30,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 153 transitions, 1234 flow [2024-11-28 02:56:32,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 153 transitions, 1198 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-28 02:56:32,648 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 692 flow [2024-11-28 02:56:32,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2024-11-28 02:56:32,649 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-11-28 02:56:32,649 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 692 flow [2024-11-28 02:56:32,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-28 02:56:32,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:56:32,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:32,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:56:32,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:56:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -546293923, now seen corresponding path program 1 times [2024-11-28 02:56:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:32,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736108165] [2024-11-28 02:56:32,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:56:34,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736108165] [2024-11-28 02:56:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736108165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935745313] [2024-11-28 02:56:34,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:34,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:34,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e770795d-fdc1-4325-84e8-f74279db5890/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:56:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:34,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:56:34,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:56:34,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:34,524 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 02:56:34,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 02:56:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:56:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935745313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:34,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:34,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-11-28 02:56:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495509459] [2024-11-28 02:56:34,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:34,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:56:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:34,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:56:34,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:56:34,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-28 02:56:34,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 692 flow. Second operand has 18 states, 18 states have (on average 24.333333333333332) internal successors, (438), 18 states have internal predecessors, (438), 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) [2024-11-28 02:56:34,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:56:34,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-28 02:56:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand