./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/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_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/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_8b43efa7-7e52-44c4-b195-8e0aa60ce488/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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:25:07,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:25:07,323 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:25:07,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:25:07,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:25:07,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:25:07,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:25:07,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:25:07,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:25:07,358 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:25:07,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:25:07,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:25:07,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:25:07,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:25:07,360 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:25:07,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:25:07,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:25:07,361 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:25:07,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:07,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:25:07,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:07,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:25:07,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:25:07,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:25:07,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:25:07,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:25:07,365 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_8b43efa7-7e52-44c4-b195-8e0aa60ce488/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 -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-11-27 20:25:07,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:25:07,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:25:07,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:25:07,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:25:07,754 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:25:07,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-27 20:25:10,917 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/data/10e5d3d22/b56c6fe4627e4ee8bcc1c2326b24110f/FLAG9296c64a6 [2024-11-27 20:25:11,296 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:25:11,297 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-27 20:25:11,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/data/10e5d3d22/b56c6fe4627e4ee8bcc1c2326b24110f/FLAG9296c64a6 [2024-11-27 20:25:11,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/data/10e5d3d22/b56c6fe4627e4ee8bcc1c2326b24110f [2024-11-27 20:25:11,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:25:11,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:25:11,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:11,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:25:11,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:25:11,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:11,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2d0407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11, skipping insertion in model container [2024-11-27 20:25:11,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:11,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:25:11,839 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_8b43efa7-7e52-44c4-b195-8e0aa60ce488/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-27 20:25:11,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:11,859 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:25:11,904 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_8b43efa7-7e52-44c4-b195-8e0aa60ce488/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-27 20:25:11,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:11,933 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:25:11,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11 WrapperNode [2024-11-27 20:25:11,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:11,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:11,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:25:11,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:25:11,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:11,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,005 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 162 [2024-11-27 20:25:12,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:12,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:25:12,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:25:12,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:25:12,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,067 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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]. [2024-11-27 20:25:12,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,083 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:25:12,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:25:12,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:25:12,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:25:12,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (1/1) ... [2024-11-27 20:25:12,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:12,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:12,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:25:12,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43efa7-7e52-44c4-b195-8e0aa60ce488/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:25:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:25:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:25:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:25:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:25:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:25:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:25:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:25:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:25:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:25:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:25:12,198 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:25:12,343 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:25:12,346 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:25:13,060 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:25:13,060 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:25:13,578 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:25:13,579 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 20:25:13,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:13 BoogieIcfgContainer [2024-11-27 20:25:13,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:25:13,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:25:13,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:25:13,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:25:13,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:25:11" (1/3) ... [2024-11-27 20:25:13,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:13, skipping insertion in model container [2024-11-27 20:25:13,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:11" (2/3) ... [2024-11-27 20:25:13,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:13, skipping insertion in model container [2024-11-27 20:25:13,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:13" (3/3) ... [2024-11-27 20:25:13,592 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-11-27 20:25:13,609 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:25:13,611 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-27 20:25:13,612 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:25:13,695 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:25:13,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-27 20:25:13,799 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-27 20:25:13,802 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:25:13,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-27 20:25:13,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-27 20:25:13,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-27 20:25:13,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:25:13,850 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;@6e1caa40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:25:13,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:25:13,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:25:13,882 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-27 20:25:13,882 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:25:13,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:13,883 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] [2024-11-27 20:25:13,886 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)] === [2024-11-27 20:25:13,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:13,894 INFO L85 PathProgramCache]: Analyzing trace with hash 560993875, now seen corresponding path program 1 times [2024-11-27 20:25:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:13,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318861895] [2024-11-27 20:25:13,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:14,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318861895] [2024-11-27 20:25:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318861895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:14,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:14,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589174187] [2024-11-27 20:25:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:14,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:14,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:14,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:14,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:14,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:14,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:14,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:14,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:16,179 INFO L124 PetriNetUnfolderBase]: 4194/5650 cut-off events. [2024-11-27 20:25:16,179 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2024-11-27 20:25:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 5650 events. 4194/5650 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23570 event pairs, 1230 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 10708. Up to 2621 conditions per place. [2024-11-27 20:25:16,237 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 1/108 dead transitions. [2024-11-27 20:25:16,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 108 transitions, 475 flow [2024-11-27 20:25:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-27 20:25:16,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-27 20:25:16,263 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 128 transitions. [2024-11-27 20:25:16,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 108 transitions, 475 flow [2024-11-27 20:25:16,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 108 transitions, 445 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-27 20:25:16,291 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2024-11-27 20:25:16,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2024-11-27 20:25:16,300 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-27 20:25:16,301 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2024-11-27 20:25:16,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:16,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:16,302 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] [2024-11-27 20:25:16,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:25:16,303 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)] === [2024-11-27 20:25:16,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1938511007, now seen corresponding path program 2 times [2024-11-27 20:25:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:16,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331582633] [2024-11-27 20:25:16,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:16,362 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:25:16,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:16,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331582633] [2024-11-27 20:25:16,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331582633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:16,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:16,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715112056] [2024-11-27 20:25:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:16,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:16,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:16,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:16,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:16,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:16,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:16,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:16,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:16,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:17,815 INFO L124 PetriNetUnfolderBase]: 5362/7396 cut-off events. [2024-11-27 20:25:17,815 INFO L125 PetriNetUnfolderBase]: For 1604/1604 co-relation queries the response was YES. [2024-11-27 20:25:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 7396 events. 5362/7396 cut-off events. For 1604/1604 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34847 event pairs, 2679 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 11899. Up to 5325 conditions per place. [2024-11-27 20:25:17,866 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 107 selfloop transitions, 7 changer transitions 3/118 dead transitions. [2024-11-27 20:25:17,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 596 flow [2024-11-27 20:25:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-27 20:25:17,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-27 20:25:17,868 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 123 transitions. [2024-11-27 20:25:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 596 flow [2024-11-27 20:25:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 118 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:25:17,880 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2024-11-27 20:25:17,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-11-27 20:25:17,881 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-11-27 20:25:17,881 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2024-11-27 20:25:17,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:17,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:17,882 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] [2024-11-27 20:25:17,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:25:17,883 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)] === [2024-11-27 20:25:17,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 684962229, now seen corresponding path program 3 times [2024-11-27 20:25:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114705309] [2024-11-27 20:25:17,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:17,924 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:25:17,926 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:18,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:18,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114705309] [2024-11-27 20:25:18,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114705309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:18,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:18,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880213684] [2024-11-27 20:25:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:18,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:18,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:18,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:18,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:18,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:18,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:18,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:18,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:19,353 INFO L124 PetriNetUnfolderBase]: 6533/9128 cut-off events. [2024-11-27 20:25:19,353 INFO L125 PetriNetUnfolderBase]: For 5016/5016 co-relation queries the response was YES. [2024-11-27 20:25:19,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22776 conditions, 9128 events. 6533/9128 cut-off events. For 5016/5016 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 44934 event pairs, 3289 based on Foata normal form. 1/7963 useless extension candidates. Maximal degree in co-relation 16270. Up to 5817 conditions per place. [2024-11-27 20:25:19,408 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 17 changer transitions 1/123 dead transitions. [2024-11-27 20:25:19,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 685 flow [2024-11-27 20:25:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-27 20:25:19,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-27 20:25:19,413 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 129 transitions. [2024-11-27 20:25:19,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 685 flow [2024-11-27 20:25:19,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:19,436 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2024-11-27 20:25:19,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2024-11-27 20:25:19,439 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-27 20:25:19,439 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2024-11-27 20:25:19,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:19,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:19,440 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] [2024-11-27 20:25:19,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:25:19,440 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)] === [2024-11-27 20:25:19,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1927977757, now seen corresponding path program 4 times [2024-11-27 20:25:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382022208] [2024-11-27 20:25:19,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:19,467 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:19,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382022208] [2024-11-27 20:25:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382022208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428760222] [2024-11-27 20:25:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:19,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:19,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:19,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:19,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:19,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:19,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:19,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:19,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:21,033 INFO L124 PetriNetUnfolderBase]: 7280/10189 cut-off events. [2024-11-27 20:25:21,033 INFO L125 PetriNetUnfolderBase]: For 11265/11265 co-relation queries the response was YES. [2024-11-27 20:25:21,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27719 conditions, 10189 events. 7280/10189 cut-off events. For 11265/11265 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 52280 event pairs, 3488 based on Foata normal form. 1/8862 useless extension candidates. Maximal degree in co-relation 20100. Up to 6616 conditions per place. [2024-11-27 20:25:21,094 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 124 selfloop transitions, 22 changer transitions 1/148 dead transitions. [2024-11-27 20:25:21,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 987 flow [2024-11-27 20:25:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:21,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-27 20:25:21,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-27 20:25:21,096 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 131 transitions. [2024-11-27 20:25:21,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 987 flow [2024-11-27 20:25:21,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 947 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-27 20:25:21,165 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2024-11-27 20:25:21,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2024-11-27 20:25:21,166 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-27 20:25:21,166 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2024-11-27 20:25:21,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:21,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:21,166 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] [2024-11-27 20:25:21,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:25:21,167 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)] === [2024-11-27 20:25:21,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -619092747, now seen corresponding path program 5 times [2024-11-27 20:25:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:21,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648062635] [2024-11-27 20:25:21,168 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:21,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:21,203 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:25:21,205 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648062635] [2024-11-27 20:25:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648062635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866582706] [2024-11-27 20:25:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:21,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:21,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:21,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:21,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:21,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:21,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:21,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:21,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:22,956 INFO L124 PetriNetUnfolderBase]: 7280/10187 cut-off events. [2024-11-27 20:25:22,957 INFO L125 PetriNetUnfolderBase]: For 16377/16377 co-relation queries the response was YES. [2024-11-27 20:25:22,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29616 conditions, 10187 events. 7280/10187 cut-off events. For 16377/16377 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51628 event pairs, 3752 based on Foata normal form. 1/9128 useless extension candidates. Maximal degree in co-relation 28424. Up to 6705 conditions per place. [2024-11-27 20:25:23,026 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 123 selfloop transitions, 11 changer transitions 3/138 dead transitions. [2024-11-27 20:25:23,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 1037 flow [2024-11-27 20:25:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-27 20:25:23,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-27 20:25:23,027 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 121 transitions. [2024-11-27 20:25:23,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 1037 flow [2024-11-27 20:25:23,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1029 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:23,100 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2024-11-27 20:25:23,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-11-27 20:25:23,101 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-11-27 20:25:23,101 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2024-11-27 20:25:23,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:23,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:23,102 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] [2024-11-27 20:25:23,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:25:23,102 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)] === [2024-11-27 20:25:23,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1518154877, now seen corresponding path program 6 times [2024-11-27 20:25:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069856163] [2024-11-27 20:25:23,103 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:25:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:23,129 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:25:23,129 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:23,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069856163] [2024-11-27 20:25:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069856163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438122757] [2024-11-27 20:25:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:23,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:23,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:23,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:23,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:23,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:23,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:23,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:24,472 INFO L124 PetriNetUnfolderBase]: 7463/10420 cut-off events. [2024-11-27 20:25:24,472 INFO L125 PetriNetUnfolderBase]: For 19441/19441 co-relation queries the response was YES. [2024-11-27 20:25:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30746 conditions, 10420 events. 7463/10420 cut-off events. For 19441/19441 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52792 event pairs, 2328 based on Foata normal form. 1/9332 useless extension candidates. Maximal degree in co-relation 30154. Up to 4720 conditions per place. [2024-11-27 20:25:24,537 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 45 changer transitions 1/152 dead transitions. [2024-11-27 20:25:24,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1179 flow [2024-11-27 20:25:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-27 20:25:24,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-27 20:25:24,539 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 128 transitions. [2024-11-27 20:25:24,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1179 flow [2024-11-27 20:25:24,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1156 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-27 20:25:24,611 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2024-11-27 20:25:24,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-11-27 20:25:24,612 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-27 20:25:24,613 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2024-11-27 20:25:24,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:24,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:24,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:24,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:25:24,614 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)] === [2024-11-27 20:25:24,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1102751267, now seen corresponding path program 1 times [2024-11-27 20:25:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182083351] [2024-11-27 20:25:24,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182083351] [2024-11-27 20:25:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182083351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:25:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662216876] [2024-11-27 20:25:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:24,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:24,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:24,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:24,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:24,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:24,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:24,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:24,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:26,321 INFO L124 PetriNetUnfolderBase]: 13072/18045 cut-off events. [2024-11-27 20:25:26,321 INFO L125 PetriNetUnfolderBase]: For 45233/45233 co-relation queries the response was YES. [2024-11-27 20:25:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58624 conditions, 18045 events. 13072/18045 cut-off events. For 45233/45233 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 98718 event pairs, 5015 based on Foata normal form. 5/16141 useless extension candidates. Maximal degree in co-relation 49625. Up to 7331 conditions per place. [2024-11-27 20:25:26,435 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 166 selfloop transitions, 25 changer transitions 8/200 dead transitions. [2024-11-27 20:25:26,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 200 transitions, 1896 flow [2024-11-27 20:25:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:25:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:25:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-27 20:25:26,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-11-27 20:25:26,437 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 6 states and 139 transitions. [2024-11-27 20:25:26,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 200 transitions, 1896 flow [2024-11-27 20:25:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 200 transitions, 1810 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:26,704 INFO L231 Difference]: Finished difference. Result has 81 places, 114 transitions, 1004 flow [2024-11-27 20:25:26,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1004, PETRI_PLACES=81, PETRI_TRANSITIONS=114} [2024-11-27 20:25:26,705 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-27 20:25:26,706 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 114 transitions, 1004 flow [2024-11-27 20:25:26,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:26,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:26,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:26,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:25:26,707 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)] === [2024-11-27 20:25:26,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -639065852, now seen corresponding path program 1 times [2024-11-27 20:25:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049989886] [2024-11-27 20:25:26,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049989886] [2024-11-27 20:25:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049989886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444900602] [2024-11-27 20:25:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:27,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:27,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:27,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:27,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 114 transitions, 1004 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:27,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:27,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:27,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:29,578 INFO L124 PetriNetUnfolderBase]: 20916/28535 cut-off events. [2024-11-27 20:25:29,579 INFO L125 PetriNetUnfolderBase]: For 80737/80737 co-relation queries the response was YES. [2024-11-27 20:25:29,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96877 conditions, 28535 events. 20916/28535 cut-off events. For 80737/80737 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 157942 event pairs, 8224 based on Foata normal form. 5/25423 useless extension candidates. Maximal degree in co-relation 87886. Up to 10761 conditions per place. [2024-11-27 20:25:29,755 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 180 selfloop transitions, 29 changer transitions 41/251 dead transitions. [2024-11-27 20:25:29,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 251 transitions, 2542 flow [2024-11-27 20:25:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:25:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:25:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-11-27 20:25:29,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-11-27 20:25:29,757 INFO L175 Difference]: Start difference. First operand has 81 places, 114 transitions, 1004 flow. Second operand 7 states and 160 transitions. [2024-11-27 20:25:29,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 251 transitions, 2542 flow [2024-11-27 20:25:30,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 251 transitions, 2497 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:30,162 INFO L231 Difference]: Finished difference. Result has 91 places, 127 transitions, 1203 flow [2024-11-27 20:25:30,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1203, PETRI_PLACES=91, PETRI_TRANSITIONS=127} [2024-11-27 20:25:30,163 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-11-27 20:25:30,163 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 127 transitions, 1203 flow [2024-11-27 20:25:30,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:30,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:30,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:30,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:25:30,164 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)] === [2024-11-27 20:25:30,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash 144679936, now seen corresponding path program 1 times [2024-11-27 20:25:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:30,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109179796] [2024-11-27 20:25:30,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109179796] [2024-11-27 20:25:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109179796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572346306] [2024-11-27 20:25:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:30,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:30,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:30,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:30,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:30,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 127 transitions, 1203 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:30,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:30,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:30,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:33,072 INFO L124 PetriNetUnfolderBase]: 19488/26688 cut-off events. [2024-11-27 20:25:33,073 INFO L125 PetriNetUnfolderBase]: For 82784/82784 co-relation queries the response was YES. [2024-11-27 20:25:33,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92924 conditions, 26688 events. 19488/26688 cut-off events. For 82784/82784 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 145893 event pairs, 5820 based on Foata normal form. 1/23744 useless extension candidates. Maximal degree in co-relation 92799. Up to 13657 conditions per place. [2024-11-27 20:25:33,230 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 188 selfloop transitions, 23 changer transitions 17/229 dead transitions. [2024-11-27 20:25:33,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 229 transitions, 2449 flow [2024-11-27 20:25:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-27 20:25:33,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-27 20:25:33,231 INFO L175 Difference]: Start difference. First operand has 91 places, 127 transitions, 1203 flow. Second operand 5 states and 127 transitions. [2024-11-27 20:25:33,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 229 transitions, 2449 flow [2024-11-27 20:25:33,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 229 transitions, 2388 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-27 20:25:33,498 INFO L231 Difference]: Finished difference. Result has 95 places, 137 transitions, 1396 flow [2024-11-27 20:25:33,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1396, PETRI_PLACES=95, PETRI_TRANSITIONS=137} [2024-11-27 20:25:33,499 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-11-27 20:25:33,500 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 137 transitions, 1396 flow [2024-11-27 20:25:33,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:33,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:33,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:33,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:25:33,500 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)] === [2024-11-27 20:25:33,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 327567872, now seen corresponding path program 2 times [2024-11-27 20:25:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:33,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677921622] [2024-11-27 20:25:33,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:33,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:33,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:25:33,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:33,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677921622] [2024-11-27 20:25:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677921622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:33,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:33,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:33,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180199401] [2024-11-27 20:25:33,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:33,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:33,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:33,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:33,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:33,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 137 transitions, 1396 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:33,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:33,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:33,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:36,786 INFO L124 PetriNetUnfolderBase]: 19243/26341 cut-off events. [2024-11-27 20:25:36,786 INFO L125 PetriNetUnfolderBase]: For 109365/109365 co-relation queries the response was YES. [2024-11-27 20:25:36,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92882 conditions, 26341 events. 19243/26341 cut-off events. For 109365/109365 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 144618 event pairs, 10629 based on Foata normal form. 1/23883 useless extension candidates. Maximal degree in co-relation 84735. Up to 19215 conditions per place. [2024-11-27 20:25:36,921 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 151 selfloop transitions, 20 changer transitions 17/189 dead transitions. [2024-11-27 20:25:36,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 189 transitions, 1952 flow [2024-11-27 20:25:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-27 20:25:36,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-11-27 20:25:36,922 INFO L175 Difference]: Start difference. First operand has 95 places, 137 transitions, 1396 flow. Second operand 5 states and 122 transitions. [2024-11-27 20:25:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 189 transitions, 1952 flow [2024-11-27 20:25:37,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 189 transitions, 1911 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:37,273 INFO L231 Difference]: Finished difference. Result has 99 places, 134 transitions, 1357 flow [2024-11-27 20:25:37,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1357, PETRI_PLACES=99, PETRI_TRANSITIONS=134} [2024-11-27 20:25:37,274 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-11-27 20:25:37,274 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 134 transitions, 1357 flow [2024-11-27 20:25:37,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:37,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:37,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:37,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:25:37,274 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)] === [2024-11-27 20:25:37,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1340120224, now seen corresponding path program 3 times [2024-11-27 20:25:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709116908] [2024-11-27 20:25:37,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:37,293 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:25:37,293 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709116908] [2024-11-27 20:25:37,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709116908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:37,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128742433] [2024-11-27 20:25:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:37,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:37,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:37,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:37,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:37,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 134 transitions, 1357 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:37,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:37,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:37,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:40,242 INFO L124 PetriNetUnfolderBase]: 19320/26439 cut-off events. [2024-11-27 20:25:40,243 INFO L125 PetriNetUnfolderBase]: For 111740/111740 co-relation queries the response was YES. [2024-11-27 20:25:40,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93615 conditions, 26439 events. 19320/26439 cut-off events. For 111740/111740 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 145063 event pairs, 10350 based on Foata normal form. 1/23962 useless extension candidates. Maximal degree in co-relation 93528. Up to 19215 conditions per place. [2024-11-27 20:25:40,384 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 166 selfloop transitions, 26 changer transitions 13/206 dead transitions. [2024-11-27 20:25:40,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 206 transitions, 2134 flow [2024-11-27 20:25:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-27 20:25:40,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-27 20:25:40,385 INFO L175 Difference]: Start difference. First operand has 99 places, 134 transitions, 1357 flow. Second operand 5 states and 131 transitions. [2024-11-27 20:25:40,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 206 transitions, 2134 flow [2024-11-27 20:25:40,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 206 transitions, 2088 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-27 20:25:40,683 INFO L231 Difference]: Finished difference. Result has 100 places, 136 transitions, 1373 flow [2024-11-27 20:25:40,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1373, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2024-11-27 20:25:40,684 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-11-27 20:25:40,684 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 1373 flow [2024-11-27 20:25:40,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:40,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:40,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:40,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:25:40,684 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:40,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1129231288, now seen corresponding path program 4 times [2024-11-27 20:25:40,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:40,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798359686] [2024-11-27 20:25:40,685 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:40,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:40,699 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:40,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798359686] [2024-11-27 20:25:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798359686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371255540] [2024-11-27 20:25:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:40,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:40,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:40,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:40,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:40,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 1373 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:40,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:40,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:40,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:43,251 INFO L124 PetriNetUnfolderBase]: 19055/26052 cut-off events. [2024-11-27 20:25:43,251 INFO L125 PetriNetUnfolderBase]: For 116896/116896 co-relation queries the response was YES. [2024-11-27 20:25:43,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93969 conditions, 26052 events. 19055/26052 cut-off events. For 116896/116896 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 141836 event pairs, 11146 based on Foata normal form. 1/23586 useless extension candidates. Maximal degree in co-relation 88214. Up to 21126 conditions per place. [2024-11-27 20:25:43,429 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 156 selfloop transitions, 10 changer transitions 19/186 dead transitions. [2024-11-27 20:25:43,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 1898 flow [2024-11-27 20:25:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-27 20:25:43,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-27 20:25:43,431 INFO L175 Difference]: Start difference. First operand has 100 places, 136 transitions, 1373 flow. Second operand 5 states and 120 transitions. [2024-11-27 20:25:43,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 1898 flow [2024-11-27 20:25:44,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1846 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-27 20:25:44,104 INFO L231 Difference]: Finished difference. Result has 101 places, 131 transitions, 1259 flow [2024-11-27 20:25:44,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1259, PETRI_PLACES=101, PETRI_TRANSITIONS=131} [2024-11-27 20:25:44,105 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-11-27 20:25:44,105 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 131 transitions, 1259 flow [2024-11-27 20:25:44,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:44,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:44,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:44,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:25:44,106 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:44,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1489359446, now seen corresponding path program 5 times [2024-11-27 20:25:44,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:44,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677938630] [2024-11-27 20:25:44,107 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:44,122 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:25:44,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:44,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677938630] [2024-11-27 20:25:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677938630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:44,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157285546] [2024-11-27 20:25:44,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:44,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:44,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:44,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:44,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 131 transitions, 1259 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:44,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:44,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:46,806 INFO L124 PetriNetUnfolderBase]: 19394/26568 cut-off events. [2024-11-27 20:25:46,806 INFO L125 PetriNetUnfolderBase]: For 113193/113193 co-relation queries the response was YES. [2024-11-27 20:25:46,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95495 conditions, 26568 events. 19394/26568 cut-off events. For 113193/113193 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 144964 event pairs, 5939 based on Foata normal form. 1/24065 useless extension candidates. Maximal degree in co-relation 95418. Up to 14665 conditions per place. [2024-11-27 20:25:46,963 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 183 selfloop transitions, 15 changer transitions 10/209 dead transitions. [2024-11-27 20:25:46,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 209 transitions, 2112 flow [2024-11-27 20:25:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-27 20:25:46,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-27 20:25:46,965 INFO L175 Difference]: Start difference. First operand has 101 places, 131 transitions, 1259 flow. Second operand 5 states and 127 transitions. [2024-11-27 20:25:46,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 209 transitions, 2112 flow [2024-11-27 20:25:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 209 transitions, 2070 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-27 20:25:47,382 INFO L231 Difference]: Finished difference. Result has 103 places, 139 transitions, 1370 flow [2024-11-27 20:25:47,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1370, PETRI_PLACES=103, PETRI_TRANSITIONS=139} [2024-11-27 20:25:47,383 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-11-27 20:25:47,383 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 139 transitions, 1370 flow [2024-11-27 20:25:47,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:47,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:47,383 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:47,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:25:47,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:47,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1421232878, now seen corresponding path program 6 times [2024-11-27 20:25:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:47,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603754354] [2024-11-27 20:25:47,385 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:25:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:47,400 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:25:47,401 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:47,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603754354] [2024-11-27 20:25:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603754354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:47,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823375196] [2024-11-27 20:25:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:47,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:47,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:47,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:47,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:47,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 139 transitions, 1370 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:47,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:47,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:47,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:50,836 INFO L124 PetriNetUnfolderBase]: 19395/26572 cut-off events. [2024-11-27 20:25:50,836 INFO L125 PetriNetUnfolderBase]: For 126223/126223 co-relation queries the response was YES. [2024-11-27 20:25:50,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97495 conditions, 26572 events. 19395/26572 cut-off events. For 126223/126223 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 145433 event pairs, 11171 based on Foata normal form. 1/24056 useless extension candidates. Maximal degree in co-relation 72895. Up to 21126 conditions per place. [2024-11-27 20:25:50,982 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 177 selfloop transitions, 17 changer transitions 10/205 dead transitions. [2024-11-27 20:25:50,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 205 transitions, 2052 flow [2024-11-27 20:25:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-27 20:25:50,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-27 20:25:50,984 INFO L175 Difference]: Start difference. First operand has 103 places, 139 transitions, 1370 flow. Second operand 5 states and 128 transitions. [2024-11-27 20:25:50,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 205 transitions, 2052 flow [2024-11-27 20:25:51,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 205 transitions, 2035 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:51,266 INFO L231 Difference]: Finished difference. Result has 108 places, 141 transitions, 1376 flow [2024-11-27 20:25:51,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1376, PETRI_PLACES=108, PETRI_TRANSITIONS=141} [2024-11-27 20:25:51,267 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-11-27 20:25:51,267 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 141 transitions, 1376 flow [2024-11-27 20:25:51,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:51,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:51,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:51,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:25:51,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:51,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1611391973, now seen corresponding path program 1 times [2024-11-27 20:25:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783862714] [2024-11-27 20:25:51,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783862714] [2024-11-27 20:25:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783862714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:51,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453967859] [2024-11-27 20:25:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:51,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:51,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:51,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:51,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:51,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 141 transitions, 1376 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:51,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:51,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:51,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:54,237 INFO L124 PetriNetUnfolderBase]: 20373/28039 cut-off events. [2024-11-27 20:25:54,237 INFO L125 PetriNetUnfolderBase]: For 141051/141051 co-relation queries the response was YES. [2024-11-27 20:25:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104302 conditions, 28039 events. 20373/28039 cut-off events. For 141051/141051 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 162134 event pairs, 5690 based on Foata normal form. 1/25392 useless extension candidates. Maximal degree in co-relation 78597. Up to 14385 conditions per place. [2024-11-27 20:25:54,427 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 208 selfloop transitions, 18 changer transitions 3/230 dead transitions. [2024-11-27 20:25:54,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 2448 flow [2024-11-27 20:25:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-27 20:25:54,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-27 20:25:54,429 INFO L175 Difference]: Start difference. First operand has 108 places, 141 transitions, 1376 flow. Second operand 5 states and 133 transitions. [2024-11-27 20:25:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 2448 flow [2024-11-27 20:25:54,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 230 transitions, 2390 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:54,748 INFO L231 Difference]: Finished difference. Result has 112 places, 152 transitions, 1613 flow [2024-11-27 20:25:54,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1613, PETRI_PLACES=112, PETRI_TRANSITIONS=152} [2024-11-27 20:25:54,749 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-11-27 20:25:54,749 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 152 transitions, 1613 flow [2024-11-27 20:25:54,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:54,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:54,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:54,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:25:54,750 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:54,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash -284127869, now seen corresponding path program 2 times [2024-11-27 20:25:54,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:54,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642533528] [2024-11-27 20:25:54,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:54,773 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:25:54,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642533528] [2024-11-27 20:25:55,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642533528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:55,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:55,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956223041] [2024-11-27 20:25:55,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:55,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:55,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:55,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:55,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:55,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 152 transitions, 1613 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:55,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:55,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:55,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:58,027 INFO L124 PetriNetUnfolderBase]: 20340/28003 cut-off events. [2024-11-27 20:25:58,028 INFO L125 PetriNetUnfolderBase]: For 149955/149955 co-relation queries the response was YES. [2024-11-27 20:25:58,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105807 conditions, 28003 events. 20340/28003 cut-off events. For 149955/149955 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 156416 event pairs, 11171 based on Foata normal form. 1/25357 useless extension candidates. Maximal degree in co-relation 100104. Up to 21126 conditions per place. [2024-11-27 20:25:58,190 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 193 selfloop transitions, 26 changer transitions 3/223 dead transitions. [2024-11-27 20:25:58,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 223 transitions, 2426 flow [2024-11-27 20:25:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:25:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-27 20:25:58,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-27 20:25:58,191 INFO L175 Difference]: Start difference. First operand has 112 places, 152 transitions, 1613 flow. Second operand 5 states and 130 transitions. [2024-11-27 20:25:58,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 223 transitions, 2426 flow [2024-11-27 20:25:58,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 223 transitions, 2396 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-27 20:25:58,516 INFO L231 Difference]: Finished difference. Result has 118 places, 156 transitions, 1746 flow [2024-11-27 20:25:58,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1746, PETRI_PLACES=118, PETRI_TRANSITIONS=156} [2024-11-27 20:25:58,516 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-11-27 20:25:58,516 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 156 transitions, 1746 flow [2024-11-27 20:25:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:58,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:58,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:58,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:25:58,517 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:58,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -733706187, now seen corresponding path program 3 times [2024-11-27 20:25:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411559064] [2024-11-27 20:25:58,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:25:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:58,538 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:25:58,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411559064] [2024-11-27 20:25:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411559064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:58,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:58,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:58,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25602060] [2024-11-27 20:25:58,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:58,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:58,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:58,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:58,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:25:58,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 156 transitions, 1746 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:58,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:58,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:25:58,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:26:02,868 INFO L124 PetriNetUnfolderBase]: 25980/35868 cut-off events. [2024-11-27 20:26:02,868 INFO L125 PetriNetUnfolderBase]: For 200208/200208 co-relation queries the response was YES. [2024-11-27 20:26:03,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136097 conditions, 35868 events. 25980/35868 cut-off events. For 200208/200208 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 214713 event pairs, 3467 based on Foata normal form. 1/32443 useless extension candidates. Maximal degree in co-relation 131693. Up to 11598 conditions per place. [2024-11-27 20:26:03,106 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 246 selfloop transitions, 45 changer transitions 4/296 dead transitions. [2024-11-27 20:26:03,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 296 transitions, 3385 flow [2024-11-27 20:26:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:26:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:26:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-27 20:26:03,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-27 20:26:03,108 INFO L175 Difference]: Start difference. First operand has 118 places, 156 transitions, 1746 flow. Second operand 6 states and 171 transitions. [2024-11-27 20:26:03,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 296 transitions, 3385 flow [2024-11-27 20:26:03,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 296 transitions, 3351 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-27 20:26:03,503 INFO L231 Difference]: Finished difference. Result has 126 places, 177 transitions, 2162 flow [2024-11-27 20:26:03,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2162, PETRI_PLACES=126, PETRI_TRANSITIONS=177} [2024-11-27 20:26:03,504 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-11-27 20:26:03,504 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 177 transitions, 2162 flow [2024-11-27 20:26:03,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:03,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:26:03,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:03,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:26:03,504 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:26:03,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:03,505 INFO L85 PathProgramCache]: Analyzing trace with hash 585367329, now seen corresponding path program 4 times [2024-11-27 20:26:03,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:03,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994240536] [2024-11-27 20:26:03,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:26:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:03,517 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:26:03,517 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:26:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994240536] [2024-11-27 20:26:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994240536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:03,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:03,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460824033] [2024-11-27 20:26:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:03,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:03,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:03,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:03,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-27 20:26:03,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 177 transitions, 2162 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:03,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:26:03,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-27 20:26:03,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand